BibFormats

853-855  Captions and Pattern--General Information (R) 

Record Type

BIB, LHR

Input Standards

Applicable Fields (R=Repeatable  NR=Nonrepeatable) Input Standards
853 Captions and Pattern--Basic Bibliographic Unit (R) Optional/Optional
854 Captions and Pattern--Supplementary Material (R) Optional/Optional
855 Captions and Pattern--Indexes (R) Optional/Optional
1st Indicator  Compressibility and expandability [853, 854]
0 Cannot compress or expand
1 Can compress but not expand
2 Can compress or expand
3 Unknown
1st Indicator Undefined [855]
blank character Undefined
2nd Indicator Caption evaluation [853, 854]
0 Captions verified; all levels present
1 Captions verified; all levels may not be present
2 Captions unverified; all levels present
3 Captions unverified; all levels may not be present
2nd Indicator Undefined [855]
blank character Undefined

For information regarding indicators for enumeration and chronology, see 863-865 Enumeration and Chronology--General Information; for textual holdings, see 866-868 Textual Holdings--General Information; for item information, see 876-878 Item Information--General Information.

Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards
ǂa First level of enumeration (NR) [All fields] Mandatory/Mandatory
ǂb Second level of enumeration (NR) [All fields] Required if applicable/Required if applicable
ǂc Third level of enumeration (NR) [All fields] Required if applicable/Required if applicable
ǂd Fourth level of enumeration (NR) [All fields] Required if applicable/Required if applicable
ǂe Fifth level of enumeration (NR) [BIB] [All fields] Required if applicable/Required if applicable
ǂf Sixth level of enumeration (NR) [BIB] [All fields] Required if applicable/Required if applicable
ǂg Alternative numbering scheme, first level of enumeration (NR) [All fields] Required if applicable/Required if applicable
ǂh Alternative numbering scheme, second level of enumeration (NR) [All fields] Required if applicable/Required if applicable
ǂi First level of chronology (NR) [All fields] Required if applicable/Required if applicable
ǂj Second level of chronology (NR) [All fields] Required if applicable/Required if applicable
ǂk Third level of chronology (NR) [All fields] Required if applicable/Required if applicable
ǂl Fourth level of chronology (NR) [All fields] Required if applicable/Required if applicable
ǂm Alternative numbering scheme, chronology (NR) [All fields] Optional/Optional
ǂn Pattern note (NR) [All fields] Optional/Optional
ǂo Type of unit (R) [All fields] Optional/Optional
ǂp Number of pieces per issuance (NR) [All fields] Optional/Optional
ǂu Bibliographic units per next higher level (R) [All fields] Optional/Optional
ǂv Numbering continuity (R) [All fields] Optional/Optional
ǂw Frequency (NR) [All fields] Optional/Optional
ǂx Calendar change (NR) [All fields] Optional/Optional
ǂy Regularity pattern (R) [All fields] Optional/Optional
ǂz Numbering scheme (R) [All fields] Optional/Optional
ǂ2 Source of caption abbreviation (R) [All fields] Optional/Optional
ǂ3 Materials specified (NR) [All fields] Required if applicable/Required if applicable
ǂ6 Linkage (NR) [All fields] System supplied/System supplied
ǂ8 Field link and sequence number (NR) [All fields] Mandatory/Mandatory

Definition

Captions that identify the enumeration and chronology levels and codes that define the publication pattern of the holdings described in the 863-865 Enumeration and Chronology fields.

A caption is a word, phrase, or abbreviation that describes the type of parts into which a multipart or serial item has been divided (e.g., volume, number, part, side). These fields may also contain codes that define the publication pattern of the bibliographic item (e.g., frequency, regularity pattern, etc.). These codes allow information in the 863-865 Enumeration and Chronology fields to be compressed or expanded by computer algorithm.

A general description of the four types of holdings data fields and their relationship to each other is given at: 853-878 - Holdings Data-General Information.

Guidelines

The 853/863 and 854/864 fields are linked by the number in subfield ǂ8 in each field.

These fields specify the caption appropriate for each level of enumeration and chronology present in an 863-865 Enumeration and Chronology field that is linked to it by subfield ǂ8.

When no captions and/or compression or expansion capability for an 863-865 field is needed, the 853-855 Captions and Pattern fields are not required in a holdings statement.

1st Indicator

The definition of the 1st indicator indicator position is specific to each field.

 

The first indicator value does not indicate whether the holdings data in the 863 or 864 field are already expressed in a compressed or expanded form. This condition is indicated by the value in the second indicator position in the 863 or 864 field.

Compression means that the content of the enumeration and chronology subfields in one or more 863 or 864 fields can be converted from an itemized report of a range of holdings to one that expresses the same holdings in terms of the enumeration or chronology of only the first and last part held.

Compressed holdings:

853 2 0 ǂ8 1 ǂa v. ǂb no. ǂu 4 ǂv r ǂi (year) ǂj (season) ǂw q ǂx 21
863 3 0 ǂ8 1.1 ǂa 6-7 ǂi 1976-1977 ǂj 21-24
863 4 0 ǂ8 1.2 ǂa 8 ǂb 1-3 ǂi 1978 ǂj 21-23
[Display example: v.6-8:no.3 (1976-1978:Autumn)]

Expansion means that the content of the enumeration or chronology subfields in one or more 863 or 864 fields can be converted from a compressed first-and-last-part-held listing of a range of holdings to an explicit itemization of each part held.

Expanded (itemized) holdings:

853 2 0 ǂ8 1 ǂa v. ǂb no. ǂu 6 ǂv r ǂi (year) ǂj (month) ǂw m ǂx 01,07
863 4 0 ǂ8 1.1 ǂa 113 ǂi 1923 ǂj 01-06
863 4 0 ǂ8 1.2 ǂa 114 ǂi 1923 ǂj 07-12
863 4 0 ǂ8 1.3 ǂa 115 ǂb 1-2 ǂi 1924 ǂj 01-02
863 4 0 ǂ8 1.4 ǂa 115 ǂb 5-6 ǂi 1924 ǂj 05-06
[Display example: v.113 (1923:Jan.-Jun.); v.114 (1923:Jul.-Dec.); v.115, pt.1-2 (1924:Jan.-1924:Feb.); v.115, pt.5-6 (1924:May-1924:Jun.)]
853, 854

Compressibility and expandability. The first indicator position contains a value that indicates the compression or expansion capability of the 853 or 854 field.

 
0

Cannot compress or expand. Data in the linked 863 or 864 field can be neither compresssed nor expanded by computer algorithm.

1

Can compress but not expand. Data in the linked 863 or 864 field can be compressed but cannot be expanded by computer algorithm.

2

Can compress or expand. Data in the linked 863 or 864 field can be either compressed or expanded by computer algorithm.

3

Unknown. Compressibility and expandability by computer algorithm of the data in the linked 863 or 864 field is unknown.

855

Undefined. The 1st indicator postition is undefined and contains a blank ( blank character ).

 
blank character

Undefined

2nd Indicator

The definition of the 2nd indicator position is specific to each field.

853, 854

Caption evaluation. Completeness of the caption levels and whether the captions used actually appear on the bibliographic item.

 
0

Captions verified; all levels present. Captions are for all possible levels and they appear on the item.

1

Captions verified; all levels may not be present. Captions are as they appear on the item, but all possible levels may not be included.

2

Captions unverified; all levels present. Captions are for all possible levels, but they are not necessarily the same as they appear on the item.

3

Captions unverified; all levels may not be present. May not include captions for all possible levels and the ones given are not necessarily the same as they appear on the item.

855

Undefined. The 2nd indicator postition is undefined and contains a blank ( blank character ).

 
blank character

Undefined

Subfields

Enumeration captions (subfields ǂa-ǂh). Captions for the levels of enumeration applicable to a bibliographic item. These caption subfields are correlated with the enumeration subfields ǂa-ǂh in fields 863-865, although the same subfields need not always be present. Full correlation of caption and enumeration level subfields ǂa-ǂh in linked 853-855/863-865 fields is not required when captions are not needed for displaying the holdings statement. Full correlation is required when compression or expansion of the enumeration in field 863 or 864 by computer algorithm is needed. If there is no caption on the item for some level, a caption may be supplied and enclosed in brackets ([ ]) or an asterisk ( * ) may be used in place of data in order to achieve full correlation.

853 0 3 ǂ8 1 ǂa v. ǂb [no.]
863 4 0 ǂ8 1.1 ǂa 1-7 ǂb 1-12
[Display example: v.1:[no.]1-v.7:[no.]12]

When alternative numbering schemes are applicable to an item, subfields ǂg and ǂh contain the alternative enumeration captions. If captions for more than two levels of alternative enumeration are required, an 866-868 field is used.

When only Chronology captions are used on an item (that is, the item carries no enumeration), the Chronology captions may be contained in either the relevant enumeration subfields (ǂa-ǂh) or chronology subfields (ǂi-ǂm), with the chronology subfields (ǂi-ǂm) preferred whenever possible. If a Chronology caption is not to be used in a display of the 863-865 Enumeration and Chronology field, it is enclosed in parentheses, e.g., (year).

853 0 3 ǂ8 1 ǂa (year)
863 4 0 ǂ8 1.1 ǂa 1964-1981
[An annual publication identified only by year]

When a supplement or index designation is used as a caption (which occurs if its numbering relates to a particular volume or part of the bibliographic unit, e.g., v. 9, suppl. 1-3), the designation is contained in the relevant enumeration caption subfield (subfields ǂa-ǂf).

854 0 0 ǂ8 1 ǂa v. ǂb suppl. ǂi (year) ǂj (month) ǂk (day)
864 4 1 ǂ8 1.1 ǂa 16 ǂb 1 ǂi 1977 ǂj 06 ǂk 01
[Display example: v.16:suppl.1 (1977:June 1)]

When the enumeration consists of the number of units held followed by a term describing the units, the entire phrase is contained in the appropriate 863-865 field, and the 853-855 field contains the term unit (in parentheses if display is not needed).

853 0 3 ǂ8 1 ǂa (unit)
863   1 ǂ8 1.1 ǂa 50 playing cards

Chronology captions (subfields ǂi-ǂm). Captions for the levels of chronology applicable to a bibliographic item. These caption subfields are correlated with the chronology subfields ǂi-ǂm in the 863-865 field(s) linked to the 853-855 field, although the same subfields need not always be present. Full correlation of caption and chronology level subfields ǂi-ǂm in the 853-855/863-865 fields is not required when captions are not needed for displaying the holdings statement. Full correlation is required when compression or expansion of the chronology in field 863 or 864 by computer algorithm is needed. Because bibliographic items generally do not carry chronology captions, a caption may be supplied and enclosed in brackets ([ ]) in order to achieve full correlation.

When an alternative chronology scheme is applicable to an item, subfield ǂm contains the alternative chronology caption. If captions for more than one level of alternative chronology are required, an 866-868 field is used.

When only Chronology captions are used on an item (that is, the item carries no enumeration), the Chronology captions may be contained in either the relevant enumeration subfields (ǂa-ǂh) or chronology subfields (ǂi-ǂm), with the chronology subfields (ǂi-ǂm) preferred whenever possible. If a Chronology caption is not to be used in a display of the 863-865 Enumeration and Chronology field, it is enclosed in parentheses, e.g., (year).

Publication pattern and other captions (subfields ǂn-ǂz). These subfields may contain codes that define the publication pattern of the bibliographic item (e.g., frequency, regularity pattern, etc.).

Control subfields (subfields ǂ2-ǂ8). These subfields provide various identifiers, relationships, and sources of terms and codes.

ǂa First level of enumeration

The caption for the highest level of enumeration. The designation for an unnumbered (e.g., new ser.) or a numbered (e.g., ser. 5) series is considered part of the caption.

855     ǂ8 1 ǂa v.
853 0 1 ǂ8 1 ǂa v.
853 0 1 ǂ8 2 ǂa new ser.:v.
863 4 0 ǂ8 1.1 ǂa 1-25
863 4 0 ǂ8 2.1 ǂa 1-12
[Holdings consist of v. 1-25 and new series v. 1-12]
ǂb Second level of enumeration

The caption for the second level of enumeration.

853 0 3 ǂ8 1 ǂa v. ǂb no.
863 4 1 ǂ8 1.2 ǂa 3 ǂb 1
ǂc Third level of enumeration

The caption for the third level of enumeration.

853 0 2 ǂ8 1 ǂa v. ǂb pt. ǂc no.
863 4 0 ǂ8 1.1 ǂa 2 ǂb 2 ǂc 1-3
ǂd Fourth level of enumeration

The caption for the fourth level of enumeration.

853 0 2 ǂ8 1. ed. ǂb no. ǂu 3 ǂv r ǂc sect. ǂu 4 ǂv r ǂd pt. ǂu 2 ǂv r ǂz bcLatn ǂi (year) ǂj (month) ǂk (day) ǂw s ǂy pd01,15
863 4 1 ǂ8 1.1 ǂa 2 ǂb 1 ǂc 1 ǂd A ǂi 2000 ǂj 01 ǂk 1
ǂe Fifth level of enumeration

The caption for the fifth level of enumeration. Subfield ǂe is unlikely to be used in fields 853, 854, or 855.

ǂf Sixth level of enumeration

The caption for the sixth level of enumeration. Subfield ǂf is unlikely to be used in fields 853, 854, or 855.

ǂg Alternative numbering scheme, first level of enumeration

The caption for the highest level of an alternative numbering scheme.

853 2 3 ǂ8 1 ǂa v. ǂb no. ǂu 12 ǂv r ǂg no. ǂi (year) ǂj (month) ǂw m ǂx 01
863 4 0 ǂ8 1.1 ǂa 1-3 ǂg 1-36 ǂi 1977-1979
863 4 0 ǂ8 1.2 ǂa 4 ǂb 1-2 ǂg 37-38 ǂi 1980 ǂj 01-02
ǂh Alternative numbering scheme, second level of enumeration

The caption for the second level of an alternative numbering scheme.

853 2 2 ǂ8 1 ǂa v ǂb no. ǂu 12 ǂv r ǂg (letter) ǂh Bd. ǂu 6 ǂv r ǂi (year) ǂj (month) ǂw m ǂx 01
863 4 0 ǂ8 1.1 ǂa 7 ǂb 1-3 ǂg B ǂh 21-23 ǂi 1981 ǂj 01-03
ǂi First level of chronology

The caption for the highest level of chronology.

853 0 1 ǂ8 1 ǂa ser.5:v. ǂi (year)
863 4 0 ǂ8 1.1 ǂa 24-33 ǂi 1969-1978
ǂj Second level of chronology

The caption for the second level of chronology.

853 0 3 ǂ8 1 ǂa v. ǂb no. ǂg pt. ǂi (year) ǂj (season)
ǂk Third level of chronology

The caption for the third level of chronology.

853 2 2 ǂ8 1 ǂa v. ǂb no. ǂu 12 ǂv r ǂi (year) ǂj (month) ǂk (day) ǂw m ǂx 01
ǂl Fourth level of chronology

The caption for the fourth level of chronology.

853 0 0 ǂ8 1 ǂa v. ǂb sect. ǂu 12 ǂv r ǂc no. ǂu 7 ǂv r ǂd pt. ǂu var ǂv r ǂi (year) ǂj (month) ǂk (day) ǂl week ǂw d ǂx 01
863 4 0 ǂ8 1.1 ǂa 1 ǂb 4 ǂc 4-7 ǂd 15 ǂi 1988 ǂj 04 k 13-16 ǂl 15
ǂm Alternative numbering scheme, chrolonogy

The caption for an alternative numbering scheme.

853 2 0 ǂ8 1 ǂa Issue no. ǂi (year) ǂj (month) ǂm (Heb.year:month)
863 4 0 ǂ8 1.10 ǂa 14-15 ǂi 2002-2003 ǂj 09-04 ǂm 5763:Tishrei-5763:Nisan
ǂn Pattern note

Explanatory note citing the specific year and issue used to prepare the regularity pattern coding expressed in the field.

853 0 2 ǂ8 1 ǂa v. ǂb no. ǂu 365 ǂv c ǂi (year) ǂj (month) ǂk (day) ǂw d ǂx 0101 ǂy cd1224/1225 ǂy ce2358/359 ǂn Based on v. 11, no. 2172/2173, December 24/December 25, 2001
ǂo Type of unit

Caption that describes the type of unit (e.g., annual buyer's guide, subject index) in the enumeration hierarchy when it has no associated sequence numbering. When used, subfield ǂo immediately follows the caption to which it refers.

853 2 0 ǂ8 1 ǂa Parts ǂi (year) ǂj (month) ǂk (day) ǂo 12, Banks and banking
863 4 0 ǂ8 1.1 ǂa 1-100 ǂi 2004 ǂj Jan. ǂk 01
854 0 0 ǂ8 1 ǂa v.
864 4 1 ǂ8 1.1 ǂa 31 ǂo Supplement
855     ǂ8 1 ǂa (year) ǂo alphabetical index
865 4   ǂ8 1.1 ǂa 1969/1978
ǂp Number of pieces per issuance

The numeric value that represents the number of physical parts or pieces received per issuance. This technique allows for describing the behavior of items issued in parts. Subfield ǂp is only coded in cases where the number of parts or pieces is different from the publishing frequency expressed in subfield ǂw. All codable frequency information should be placed in subfield ǂw.

853 2 0 ǂ8 1 ǂa [Ed.] ǂb v. ǂu 12 ǂv r ǂi (year) ǂj (month) ǂp 6 ǂw f ǂx 01
863 4 1 ǂ8 1.1 ǂa 156 ǂb 1-6 ǂi 2001 ǂj 01
863 4 1 ǂ8 1.2 ǂa 156 ǂb 8-11 ǂi 2001 ǂj 07
[A semiannual publication issued twice per year in January and July, with six issues published at each time. It restarts its volume numbering (second level enumeration) with every issuance. The first level enumeration changes once per year at the start of the calendar year.]
ǂu Bibliograpic units per next higher level

The number (or the code var or und) that specifies the total number of parts that comprise the next higher level of enumeration. May be used with each level of enumeration except the first level (subfield ǂa or subfield ǂg) because there is no higher level. When it is used, subfield ǂu follows the caption subfield for the enumeration level to which it applies.

n - Number of parts. Total number of parts that constitute the next higher level of enumeration for example, a quarterly publication requires 4 issues to make 1 volume. Because subfield ǂu is a variable length, no leading zero is used for a single-character number.

853 0 3 ǂ8 1 ǂa v. ǂb no. ǂu 12 ǂv r ǂc pt. ǂu 3 ǂw j
[The bibliographic unit consists of 12 numbers per volume and 3 parts per number]

Combined issues are counted as one part.

853 1 0 ǂ8 1 ǂa v. ǂb no. ǂu 8 ǂv r ǂi (year) ǂj (month) ǂw m ǂx 01 ǂy pm01/02,03,04,05,06/07,08/09,10,11/12
[Example of monthly serial with four combined issues]

var - Varies. The total number of parts that constitute the next higher level of enumeration varies so much that a specific number in subfield ǂu would be meaningless.

und - Undetermined. The next higher level of enumeration is known to have parts but the number of parts is unknown.

ǂv Numbering continuity

One-character code that indicates whether the number of the described level consists of continuously incrementing numbers or numbers that restart at the completion of the unit.

May be used with each level of enumeration except the first level (subfield ǂa or subfield ǂg). Subfield ǂv follows the caption subfield and the subfield ǂu for the enumeration to which it applies.

c Number of increments continuously
r Number restarts at the completion of the unit

 

ǂw Frequency

One-character alphabetic code or a number that indicates the publication frequency of the item. Subfield ǂw is not related to a specific caption. It is input following the last chronology caption used. Specific publishing pattern information is contained in the subfield ǂy, including exceptions to the frequency coded in this subfield. Subfield ǂp is also used when both a frequency code and number of pieces per issuance need to be recorded for multipart titles.

Codes. Use for a publishing pattern that has a fundamental periodicity.

a Annual
b Bimonthly
c Semiweekly
d Daily
e Biweekly
f Semiannual
g Biennial
h Triennial
i Three times a week
j Three times a month
k Continuously updated
m Monthly
q Quarterly
s Semimonthly
t Three times a year
w Weekly
x Completely irregular

854 0 0 ǂ8 1 ǂa (year) ǂw a
854 2 0 ǂ8 1 ǂa v. ǂb no. ǂu 12 ǂi (year) ǂj (month) ǂw m ǂx 11

Number. Used to specify the number of issues per year when no codable periodicity exists. Because subfield ǂw is variable in length, no leading zero is used for a single-character number.

853 0 2 ǂ8 1 ǂa (year) ǂb (month) ǂw 4 ǂy pm03,06,08,12
863 3 0 ǂ8 1.1 ǂa 2002-2003
863 4 1 ǂ8 1.2 ǂa 2004 ǂb 03
[The bibliographic unit is published four times a year at irregular intervals]
ǂx Calendar change

One or more two- or four-character numeric codes that indicate the chronological point at which the highest level increments or changes.

Codes. A two-character code identifies the month or season of change. A four-character code in the pattern mmdd (2 for the month and 2 for the day) identifies the month and day of change. A month or day code of less than two digits is right justified and the unused position contains a zero.

Month

01-12 Month

Day

01-31 Day

Season

21 Spring
22 Summer
23 Autumn
24 Winter

853 2 3 ǂ8 1 ǂa v. ǂb no. ǂu 4 ǂv r ǂi (year) ǂj (season) ǂw q ǂx 21
[A quarterly publication for which issue no. 1 of each volume is identified as Spring]
853 2 0 ǂ8 1 ǂa v. ǂb no. ǂu 12 ǂv c ǂi (year) ǂj (month) ǂw m ǂx 07
[A monthly publication consisting of 12 numbers per volume; the volume number increments in July]

When there is more than one change in a year for example, 12 numbers per year are issued as 2 volumes per year, all of the calendar change codes are contained in one subfield ǂx and the codes are separated by a comma. Subfield ǂx is not related to a specific caption. It is input following the last subfield.

853 2 2 ǂ8 1 ǂa v. ǂb no. ǂu 6 ǂv c ǂi (year) ǂj (month) ǂw m ǂx 06,12
[A monthly publication which has 6 numbers per volume. The numbers increment continuously, and new volumes begin in June and December.]

 

ǂy Regularity pattern

The codes that describe the regularity of the publishing pattern coded in subfield ǂw. The subfield may be structured as either a chronology type or enumeration type. Both types begin with a publication code.

Publication Code. First one-character code in both the chronology type and enumeration type indicates whether the subsequent codes refer to the publication or the non-publication of part(s) of the item or the combination of either enumeration or chronology elements.

c Combined
o Omitted
p Published

Chronology Code. Designation of the part of the item for which regularity pattern information is provided. Multiple codes are separated by a comma. A slash ( / ) is used to designate combined issues.

Two-character alphabetic or numeric codes are used for days, weeks, months, and/or seasons. A four-character code is used to indicate a year or year combination. A code of less than two digits is right justified and the unused position contains a zero.

Chronology Type and Code Patterns:

Chronology Code Possible Code Pattern Example Example Meaning
d dd su Sunday
d DD 08 Eighth day of each month
m MM 09 September
d MMDD 0925 September 25
s SS 22 Summer
w WWdd 03we Third Wednesday
s MMWWdd 0599u Last Tuesday in May
w MMWWdd 0802we Second Wednesday in August
w MMWW 1204 Fourth week in December
y YYYY yyy1/yyy2 Span over 2 years

Pattern Description:

Pattern Meaning Characteristics Possible Values
dd day alpha mo-su
DD day numeric 01-31
ww week numeric 01-53
WW week numeric 99, 09, 07, 00, 01, 02, 03, 04, 05
MM month numeric 01-12
SS season numeric 21, 22, 23, 24
y year numeric 2002

 

Pattern Values:

Days of the week - dd

mo Monday
tu Tuesday
we Wednesday
th Thursday
fr Friday
sa Saturday
su Sunday

Week - ww

01-53

Month - MM

01-12

Day of Month - DD

01-31

Week of month - WW

99 Last
98 Next to last
97 Third to last
00 Every
01 First
02 Second
03 Third
04 Fourth
05 Fifth

Season - SS

21 Spring
22 Summer
23 Autumn
24 Winter

853 0 3 ǂ8 1 ǂa v. ǂb no. ǂu 43 ǂv r ǂi (year) ǂj (month) ǂk (day) ǂw 43 ǂx 0901 ǂy ow0604we,0702we,0703we,0704we,0802we,0803we,0804we,0805we,1203we,1204we,1205we ǂy pdwe
863 3 0 ǂ8 1.1 ǂa 21-22 ǂi 2001-2003
863 4 1 ǂ8 1.2 ǂa 23 ǂb 1 ǂi 2003 ǂj 09 ǂk 03
[Item has weekly issues except on dates noted in subfield ǂy]
853 2 0 ǂ8 1 ǂa v. ǂb no. ǂu 48 ǂv r ǂw w ǂx 0101 ǂy ow05we
[Item is weekly, but omits the fifth Wednesday of the month]
853 0 3 ǂ8 1 ǂa v. ǂb no. ǂu 12 ǂv r ǂi (year) ǂj (month) ǂw m ǂx 01 ǂy pw0402th,0501we ǂy ow0402we,0502we
[Item is monthly, published every second Wednesday of the month except in April when it is published on the second Thursday and May, when it is published on the first Wednesday]
853 0 2 ǂ8 1 ǂa v. ǂb no. ǂu var. ǂv r ǂi (year) ǂj (month) ǂk (day) ǂw c ǂx 07 ǂy ypw00mo,00th ǂy od0101,0704,1225 ǂy ow0901mo,1104th
[Item is published every Monday and Thursday except for when New Years Day, the Fourth of July, Labor Day, Thanksgiving, and Christmas fall on a Monday or Thursday]
853 0 2 ǂ8 1 ǂa v. ǂi (year) ǂw g ǂy pyyyy1/yyy2
863 4 1 ǂ8 1 ǂa 10 ǂi 1999/2000
[Item is published every other year combining chronology to reflect the span of coverage]
854 0 2 ǂ8 1 ǂa v. ǂb no. ǂu 11 ǂv r ǂi (year) ǂj (month) ǂw m ǂx 01 ǂy cm07/08
[Item is monthly, with the first number appearing in January and a combined July/August issue]
854 0 3 ǂ8 1 ǂa v. ǂb no. ǂu 10 ǂv r ǂi (year) ǂj (month) ǂw m ǂx 09 ǂy om07/08
[Item has ten numbers per volume; ten numbers per year beginning with no. 1 in September; no numbers published in July or August]
854 2 3 ǂ8 1 ǂa v. ǂb no. ǂu 3 ǂv r ǂi (year) ǂj (season) ǂw 3 ǂx 21 ǂy ps21,22,23
[Item has three numbers per volume; three numbers per year, published in Spring, Summer, and Autumn]

Enumeration Type

The enumeration is structured as:

<Publication Code><Enumeration Code Definition><Enumeration Code>,<Enumeration Code>, ...

Enumeration codes may occupy the second and third positions after subfield ǂy to provide for regularity patterns for items that use only enumeration for sequencing and/or those items whose sequencing must be specified separately when combinations occur.

Enumeration Code Definition - Second code in the subfield indicates whether the subsequent codes represent enumeration rather than chronology. When code e is used, an additional numeric code is added to indicate the level of enumeration to which the regularity applies.

e1 - Enumeration, 1st level

e2 - Enumeration, 2nd level

Enumeration Code - Enumeration code following the enumeration code definition indicates the designation of the issues of the item for which regularity pattern information is provided. Multiple designations are separated a comma. A slash ( / ) is used to designate a combined issue.

853 0 2 ǂ8 1 ǂa v. ǂb no. ǂu 6 ǂv r ǂw s ǂx 01,02,03,04,05,06,07,08,09,10,11,12 ǂy pw02we,04we ǂy ce21/3,4/6
[Item is published twenty-four times per year on the second and fourth Wednesday of every month. The second level of enumeration combines numbers 1 to 3 on the second Wednesday of every month and numbers 4 to 6 on the fourth Wednesday of every month.]

Presence of continuous numbering (subfield ǂv, code c) in conjunction with an enumeration code signals the combination of specific numbers in the sequence of specific issues. Because of the continuous numbering, the actual enumeration values cannot be used to express the enumeration in subfield ǂy. Enumerative values must be represented in terms of the number of issues expected to be published to allow combined issue prediction to occur.

853 0 2 ǂ8 1 ǂa v. ǂb no. ǂu 52 ǂv c ǂw w ǂy ce251/52
[Item is published weekly except for a combination in the last two weeks of December. Since issue description is limited to enumeration only, and the second level enumeration is also continuous, the pattern represents the issue combination in terms of combining the fifty-first and fifty-second issues published that year.]
853 2 0 ǂ8 1.0 ǂa (year) ǂb (month) ǂc (day) ǂw w ǂy cw1203/1204
[Item is published weekly except that it combines the third and fourth weeks in December]

Automated systems may construct algorithms to predict the second level of continuous enumeration based on the starting value of the second level of enumeration at the beginning of the subscription cycle.

There may be multiple ways to express the same pattern using the defined publication, chronology, and enumeration codes. For instance, the pattern may be expressed enumerating all published issues, or enumerating the omitted issues. The institution should strive for the most succinct method possible that accurately records the pattern.

Regularity pattern codes, along with additional examples are maintained at the Library of Congress and are available online at: Chronology and Enumeration Types with Code Patterns. Questions on coding patterns or establishing new ones should be addressed to the Network Development and MARC Standards Office, Library of Congress.

ǂz Numbering scheme

Six-character code string used to designate the numbering scheme used on a publication. The codes allow for recording different numbering schemes at different levels of enumeration. Subfield ǂz follows the enumeration subfield to which it applies.

Type of designation - First one-character code indicates whether the numbering is a number, letter, or combined (number first or letter first). Combined should only be used when one of the elements is a constant designation (e.g., 1a, 2a, 3a), rather than actually two different levels of enumeration (e.g., 1a, 1b, 1c).

a - Number

b - Letter

c - Combined, number first

d - Combined, letter first

e - Symbol or character

Case - Second one-character code indicates if a numbering scheme is conveyed as alphabetic characters and applies both to those coded in the previous position as b or to Roman numerals.

a - No case

b - Lower case

c - Upper case

d - Mixed case

Script Code/Type Code - Third through sixth positions indicate either the script used in the numbering scheme or, for numerals or symbols that are not in alternate scripts, the type of numeral or symbol used.

The script code is a four-character code from the list at: ISO 15924 Registration Authority.

853 2 0 ǂ8 1 ǂa v. ǂb issue ǂi (year) ǂj (month) ǂk (day) ǂw w ǂz aaarab
863 4 1 ǂ8 1.1 ǂa 37 ǂb 1232 ǂi 1970 ǂj 12 ǂk 31
[The numbering scheme used is an Arabic alternate script]
853 2 0 ǂ8 1 ǂa v. ǂb (*) ǂu 12 ǂv r ǂc pt. ǂu 2 ǂv r ǂz bcLatn ǂi (year) ǂw s ǂx 01
863 4 1 ǂ8 1.1 ǂa 8 ǂb 3 ǂc B
[Asterisk used as a convention for non-captioned level. Numbering scheme of 3rd level is uppercase alphabetic Latin script letter]

The type code is as follows:

anblank characterblank character - Arabic numeral

rnblank characterblank character - Roman numeral

sy<Symbol>blank character - Symbol

Note: Trailing blanks ( blank character ) do not appear in OCLC online displays.

853 2 0 ǂ8 1 ǂa v. ǂb no. ǂu 26 ǂv r ǂw w ǂx 0101 ǂy ow05we ǂz aaan
863 4 1 ǂ8 1.1 ǂa 18 ǂb 7
[The numbering scheme used is Arabic numeral]
ǂ2 Source of caption abbreviation

MARC code that identifies the source of the abbreviations used in the captions of the field. Code from Captions Abbreviation Source Codes.

ǂ3 Materials specified

The range of volumes or dates to which the field applies. For information about subfield ǂ3, see Control Subfields.

ǂ6 Linkage

Data that link fields when non-Latin script is entered. This subfield is system supplied and does not appear in the OCLC online displays. Do not add subfield ǂ6. For more information about subfield ǂ6, see Control Subfields

ǂ8 Field link and sequence number

For information about subfield ǂ8, see Control Subfields.

Indexing

Fields 853-855 are not indexed.

MARC 21

For more information, including content designator history, see MARC 21 Format for Holdings Data, fields 853-855.