Contents Fixed field Access points 0xx 1xx 2xx 3xx 4xx 5xx 6xx 7xx 8xx 9xx Control subfields

891 Publication Pattern Data (R)

Record Type
BIB
Input Standards
Optional/Optional
1st Indicator Subfield ǂ9 dependent
, 0-5	Subfield ǂ9 dependent
2nd Indicator Subfield ǂ9 dependent
, 0-4	Subfield ǂ9 dependent
Subfields (R=Repeatable NR=Nonrepeatable)		Input Standards
ǂa	First level of enumeration (NR)	Required if applicable/Required if applicable
ǂb	Second level of enumeration (NR)	Required if applicable/Required if applicable
ǂc	Third level of enumeration (NR)	Required if applicable/Required if applicable
ǂd	Fourth level of enumeration (NR)	Required if applicable/Required if applicable
ǂe	Fifth level of enumeration (NR)	Required if applicable/Required if applicable
ǂf	Sixth level of enumeration (NR)	Required if applicable/Required if applicable
ǂg	Alternative numbering scheme, first level of enumeration (NR)	Optional/Optional
ǂh	Alternative numbering scheme, second level of enumeration (NR)	Optional/Optional
ǂi	First level of chronology (NR)	Required if applicable/Required if applicable
ǂj	Second level of chronology (NR)	Required if applicable/Required if applicable
ǂk	Third level of chronology (NR)	Required if applicable/Required if applicable
ǂl	Fourth level of chronology (NR)	Required if applicable/Required if applicable
ǂm	Alternative numbering scheme, chronology (NR)	Optional/Optional
ǂn	Pattern note (NR) [Valid only for subfield ǂ9 coded 853-855]	Optional/Optional
ǂn	Converted Gregorian year (NR) [Valid only for subfield ǂ9 coded 863-865]	Optional/Optional
ǂo	Type of unit (R) [Valid only for subfield ǂ9 coded 853-855 or 863-865]	Optional/Optional
ǂp	Number of pieces per issuance (NR) [Valid only for subfield ǂ9 coded 853-855]	Optional/Optional
ǂp	Piece designation (NR) [Valid only for subfield ǂ9 coded 863-865]	Optional/Optional
ǂu	Bibliographic units per next higher level (NR) [Valid only for subfield ǂ9 coded 853-855]	Required if applicable/Required if applicable
ǂv	Numbering continuity (R) [Valid only for subfield ǂ9 coded 853-855]	Required if applicable/Required if applicable
ǂv	Issuing date (R) [Valid only for subfield ǂ9 coded 865]	Optional/Optional
ǂw	Frequency (NR) [Valid only for subfield ǂ9 coded 853-855]	Required if applicable/Required if applicable
ǂw	Break indicator (NR) [Valid only for subfield ǂ9 coded 863-865]	Optional/Optional
ǂx	Calendar change (R) [Valid only for subfield ǂ9 coded 853-855]	Required if applicable/Required if applicable
ǂx	Nonpublic note (R) [Valid only for subfield ǂ9 coded 863-865]	Optional/Optional
ǂy	Regularity pattern (R) [Valid only for subfield ǂ9 coded 853-855]	Required if applicable/Required if applicable
ǂz	Numbering scheme (R) [Valid only for subfield ǂ9 coded 853-855]	Optional/Optional
ǂz	Public note (R) [Valid only for subfield ǂ9 coded 863-865]	Optional/Optional
ǂ2	Source of caption abbreviation (R) [Valid only for subfield ǂ9 coded 853-855]	Optional/Optional
ǂ3	Materials specified (NR) [Valid only for subfield ǂ9 coded 853-855]	Optional/Optional
ǂ8	Field link and sequence number (NR)	Optional/Optional
ǂ9	Tag of the MARC holdings field (NR)	Mandatory/Mandatory

Definition

Information about the publication patterns for serials. Field 891 was implemented in support of the CONSER Publication Patterns Initiative. However, the field is also available for use by non-CONSER libraries.

Field 891 is not part of MARC 21 format. Field 891 contains embedded MARC holdings fields 853, 854, 855, 863, 864, and 865. Use subfield ǂ9 to record the MARC holding field tag. Define all other indicators and subfields to correspond to the field tag recorded in subfield ǂ9. Repeat field 891 for each instance of a MARC field tag embedded in subfield ǂ9. For more information about the indicators and subfields, see MARC 21 Format for Holdings Data.

Guidelines on the use of field 891 are available on the Publication Patterns Initiative.

1st Indicator

Subfield 9 dependent. All indicator values have meaning only within the MARC field definition for the field recorded in subfield ǂ9.

, 0-5	Subfield ǂ9 dependent. Indicator definition dependent on the field recorded in subfield ǂ9.

2nd Indicator

Subfield 9 dependent. All indicator values have meaning only within the MARC field definition for the field recorded in subfield ǂ9.

, 0-4	Subfield ǂ9 dependent. Indicator definition dependent on the field recorded in subfield ǂ9.

Subfields

ǂa First level of enumeration

The highest level of enumeration.

891	3	3	ǂ9 853 ǂ8 1 ǂa (year/year)
891	4	1	ǂ9 863 ǂ8 1 ǂa <1980/1988> ǂx provisional

ǂb Second level of enumeration

The second level of enumeration.

891	2	0	ǂ9 853 ǂ8 1 ǂa (year) ǂb (no.) ǂu 3 ǂv r ǂi (year) ǂj (season) ǂw t
891	4	1	ǂ9 863 ǂ8 1.1 ǂa <1995> ǂb <3> ǂi <1995> ǂj <24>

ǂc Third level of enumeration

The third level of enumeration.

891	2	0	ǂ9 853 ǂ8 1 ǂa (year) ǂb (month) ǂc (day/day) ǂw g
891	4	1	ǂ9 863 ǂ8 1.1 ǂa <2009>ǂb <11>ǂc <13/15>

ǂd Fourth level of enumeration

The fourth level of enumeration.

891	3	3	ǂ9 853 ǂ8 1 ǂa (year) ǂb (*) ǂc v. ǂd no. ǂi (year) ǂj (date)
891	4	0	ǂ9 863 ǂ8 1 ǂa <1993> ǂb <1>- ǂc <1>- ǂi <1993> ǂx provisional

ǂe Fifth level of enumeration

The fifth level of enumeration.

ǂf Sixth level of enumeration

The sixth level of enumeration.

ǂg Alternative numbering scheme, first level of enumeration

The highest level of alternative numbering scheme.

891	3	0	ǂ9 853 ǂ8 1 ǂa (year) ǂb (month) ǂg no. ǂw m
891	4	0	ǂ9 863 ǂ8 1.1 ǂa 1993-2010 ǂb 01-10 ǂg 1-209

ǂh Alternative numbering scheme, second level of enumeration

The second level of alternative numbering scheme.

891	2	0	ǂ9 853 ǂ8 1 ǂa v. ǂb no. ǂu 4 ǂv r ǂg (year) ǂh +quarter ǂu 4 ǂv r ǂw q
891	4	1	ǂ9 863 ǂ8 1.1 ǂa <28> ǂb <1>ǂg <2000> ǂh <1>

ǂi First level of chronology

The highest level of chronology.

891	0	0	ǂ9 853 ǂ8 1 ǂa al-sanah ǂb al-ʻadad ǂi (Hegira year) ǂw q
891	4	0	ǂ9 863 ǂ8 1 ǂa <3> ǂb <4> ǂi <1411> ǂm <1989>

ǂj Second level of chronology

The second level of chronology.

891	3	3	ǂ9 853 ǂ8 1 ǂa v. ǂb no. ǂi (year) ǂj (quarter)
891	4	0	ǂ9 863 ǂ8 1 ǂa <1> ǂb <3>- ǂi <1978> ǂx provisional

ǂk Third level of chronology

The third level of chronology.

891	2	0	ǂ9 853 ǂ8 1 ǂa +sess. ǂi (year) ǂj (month/month) ǂk (day/day) ǂw x
891	4	0	ǂ9 863 ǂ8 1.1 ǂa [1]-9 ǂi 1964-1996 ǂj 03/06-04/05 ǂk 23/16-27/11

ǂl Fourth level of chronology

The fourth level of chronology.

ǂm Alternative numbering scheme, chronology

The alternative chronology scheme.

891	2	0	ǂ9 853 ǂ8 1 ǂa (*) ǂi (Hejira year) ǂw a ǂm (year/year)
891	4	1	ǂ9 863 ǂ8 1.1 ǂa <21> ǂi <1420> ǂm <1999/2000>

ǂn Pattern note [Valid only for subfield ǂ9 coded 853-855]

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

891	2	0	ǂ9 853 ǂ8 1 ǂa v. ǂb no. ǂu 3 ǂv r ǂg +issue ǂi (year) ǂj (month) ǂw t
891	4	1	ǂ9 863 ǂ8 1.1 ǂa 1-4 ǂg 1-12 ǂi 1994-[2001?]
891	2	0	ǂ9 853 ǂ8 2 ǂa v. ǂb no. ǂu 2 ǂv r ǂg +issue ǂw 2 ǂ3 v.5- ǂn undated; semiannual per Web site; v.5:no.1 c2002
891	4	1	ǂ9 863 ǂ8 2.1 ǂa 5 ǂb 1 ǂg 13

ǂn Converted Gregorian year [Valid only for subfield ǂ9 coded 863-865]

The Gregorian-calendar conversion of a year that is recorded in a non-Gregorian scheme in a chronology-level subfield.

891	2	0	ǂ9 853 ǂ8 1 ǂa al-ʻadad ǂi (Hegira year) ǂj (Hegira month) ǂw q
891	4	1	ǂ9 863 ǂ8 1.1 ǂa 1 ǂi 1418 ǂj Muḥarram ǂn 1997

ǂo Type of unit

The type of unit (e.g., annual buyer's guide, subject index) in the enumeration hierarchy when it has no associated sequence numbering. Subfield ǂo immediately follows the caption subfield to which it refers when subfield ǂ9 is coded 853-855. Subfield ǂo immediately follows the enumeration subfield to which it refers when subfield ǂ9 is coded 863-865.

ǂp Number of pieces per issuance [Valid only for subfield ǂ9 coded 853-855]

A 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. Place all codeable frequency information in subfield ǂw.

891	2	0	ǂ9 853 ǂ8 1 ǂa v. ǂb no. ǂu 4 ǂv r ǂǂi (year) ǂj (month) ǂw q ǂp m01,04.07,10
891	4	1	ǂ9 863 ǂ8 1.1 ǂa <80>ǂb <1>ǂi <1999>ǂj <01>

ǂp Piece designation [Valid only for subfield ǂ9 coded 863-865]

An identification of a piece. The designation may be an identification number such as a bar code number or an accession number.

ǂu Bibliographic units per next higher level [Valid only for subfield ǂ9 coded 853-855]

Either a number that specifies the total number of parts that comprise the next higher level of enumeration or the code var or und. Use subfield ǂu with each level of enumeration except the first level.

891	0	3	ǂ9 853 ǂ8 1 ǂa v. ǂb no. ǂu 26 ǂv r ǂi (year) ǂj (month) ǂw w ǂx 01
891	4	0	ǂ9 863 ǂ8 1.1 ǂa <1> ǂi <1984>
891	2	0	ǂ9 853 ǂ8 2 ǂa v. ǂb no. ǂu var ǂv r ǂi (year) ǂj (month) ǂk (day) ǂw w ǂx 01 ǂy ow1299
891	4	1	ǂ9 863 ǂ8 2.1 ǂa <36> ǂb <1> ǂi <2001> ǂj <07> ǂk <4>

ǂv Numbering continuity [Valid only for subfield ǂ9 coded 853-855]

A one-character code that indicates whether the enumeration has continuously incrementing numbers or whether the numbering restarts at the completion of a specific unit. Use subfield ǂv with each level of enumeration except the first level.

891	2	0	ǂ9 853 ǂ8 1 ǂa v. ǂb no. ǂu 6 ǂv r ǂi (year) ǂj (month/month) ǂw b ǂx 01/02
891	4	1	ǂ9 863 ǂ8 1.1 ǂa <14> ǂb <1> ǂi <1997> ǂj <01/02>

ǂv Issuing date [Valid only for subfield ǂ9 coded 865]

Date of issuance of an index.

891	3	0	ǂ9 853 ǂ8 1 ǂa v. ǂi (year)
891	4	0	ǂ9 863 ǂ8 1.1 ǂa <1>- ǂi <1984>- ǂx provisional

ǂw Frequency [Valid only for subfield ǂ9 coded 853-855]

A one-character alphabetic code or a number that indicates the publication frequency of the item.

891	2	0	ǂ9 853 ǂ8 1 ǂa v. ǂb no. ǂu 4 ǂv r ǂi (year) ǂj (month) ǂw 04 ǂx 03
891	4	1	ǂ9 863 ǂ8 1.1 ǂa <1>- ǂi <1972>- ǂx provisional

ǂw Break indicator [Valid only for subfield ǂ9 coded 863-865]

A one-character code that indicates whether a break in the enumeration and chronology contained in multiple 863-865 fields is due either to published issue(s) lacking in the collection or to unpublished parts or a lack of continuity in the enumeration and chronology of the parts.

ǂx Calendar change [Valid only for subfield ǂ9 coded 853-855]

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

891	2	0	ǂ9 853 ǂ8 1 ǂa (year) ǂb (season) ǂw f ǂx 21,23
891	4	1	ǂ9 863 ǂ8 1.1 ǂa <2002> ǂb <21>

ǂx Nonpublic note [Valid only for subfield ǂ9 coded 863-865]

A note relating to all or part of the field that is in a form not intended for public display. A note which is intended for public display is contained in subfield ǂz.

891	3	0	ǂ9 853 ǂ8 1 ǂa v. ǂi (year)
891	4	0	ǂ9 863 ǂ8 1.1 ǂa <1>- ǂi <1984>- ǂx provisional

ǂy Regularity pattern [Valid only for subfield ǂ9 coded 853-855]

Codes that describe the regularity of the publishing pattern codes in subfield ǂw.

891	2	0	ǂ9 853 ǂ8 1 ǂa v. ǂb no. ǂu 4 ǂv r ǂi (year) ǂj (month) ǂw q ǂx 03
891	4	1	ǂ9 863 ǂ8 1.1 ǂa 1 ǂb 1 ǂi 1998 ǂj 03
891	2	0	ǂ9 853 ǂ8 2 ǂa v. ǂb no. ǂu 5 ǂv r ǂi (year) ǂj (month) ǂw b ǂx 03 ǂy 03,06,08,10,12
891	4	1	ǂ9 863 ǂ8 2.1 ǂa <8> ǂb <3> ǂi <2005> ǂj <08>
891	2	0	ǂ9 853 ǂ8 3 ǂa v. ǂb no. ǂu 6 ǂv r ǂi (year) ǂj (month) ǂw b ǂx 02
891	4	1	ǂ9 863 ǂ8 3.1 ǂa 9 ǂb 1 ǂi 2006 ǂj 02

ǂz Numbering scheme [Valid only for subfield ǂ9 coded 853-855]

A six-character code string designating the numbering schemes used on a publication. The codes allow for recording different numbering schemes at different levels of enumeration.

ǂz Public note [Valid only for subfield ǂ9 coded 863-865]

A note relating to all or part of the field that is in a form intended for public display. A note which is not intended for public display is contained in subfield ǂx.

891	2	0	ǂ9 853 ǂ8 1 ǂa (year) ǂb (month)
891	3	0	ǂ9 863 ǂ8 1.1 ǂa 1974-1982 ǂb 02-10 ǂz Incomplete

ǂ2 Source of caption abbreviation [Valid only for subfield ǂ9 coded 853-855]

MARC code that identifies the source of the abbreviations used in the captions of the field. See Caption Abbreviation Source Codes.

ǂ3 Materials specified [Valid only for subfield ǂ9 coded 853-855]

For information about subfield ǂ3, see Control Subfields.

891	3	3	ǂ9 853 ǂ8 1 ǂa v. ǂb no. ǂu 4 ǂv r ǂi (year) ǂj (month) ǂw q ǂx 03 ǂ3 1986-1998
891	4	0	ǂ9 863 ǂ8 1.1 ǂa <1>- ǂi <1986>- ǂx provisional
891	2	0	ǂ9 853 ǂ8 2 ǂa v. ǂb no. ǂu 6 ǂv r ǂi (year) ǂj (month) ǂx 02
891	4	1	ǂ9 863 ǂ8 2.1 ǂa 14 ǂb 1 ǂi 1999 ǂj 02

ǂ8 Field link and sequence number

For information about subfield ǂ8, see Control Subfields. Use subfield ǂ8 to propose a sequence for the relative order of display of the linked fields.

891	0	3	ǂ9 853 ǂ8 1 ǂa v. ǂb no. ǂi (year)
891	4	0	ǂ9 863 ǂ8 1.1 ǂa <2>- ǂi <1900>- ǂx provisional
891	1	3	ǂ9 853 ǂ8 2 ǂa v. ǂb no. ǂu 6 ǂv r ǂi (year)
891	4	0	ǂ9 863 ǂ8 2.1 ǂa <59>- ǂi <1957>- ǂx provisional
891	1	3	ǂ9 853 ǂ8 3 ǂa v. ǂb no. ǂu 4 ǂv r ǂi (year) ǂj (month) ǂw q ǂx 02
891	4	0	ǂ9 863 ǂ8 3.1 ǂa <70>- ǂi <1968>- ǂx provisional
891	4	1	ǂ9 863 ǂ8 3.2 ǂa <103> ǂb <1> ǂi <2001> ǂj <02>

ǂ9 Tag of the MARC holdings field

Subfield ǂ9 contains the tag of the holdings field embedded in field 891. The only valid contents are tags 853, 854, 855, 863, 864, and 865 which are defined in the MARC 21 format as:

853 - Captions and Pattern--Basic Bibliographic Unit
854 - Captions and Pattern--Supplementary Material
855 - Captions and Pattern--Indexes
863 - Enumeration and Chronology--Basic Bibliographic Unit
864 - Enumeration and Chronology--Supplementary Material
865 - Enumeration and Chronology--Indexes

Subfield ǂ9 is always the first subfield in the field. Indicator and subfield definitions are dependent on the field tag recorded in subfield ǂ9. All subfield code values have meaning only within the MARC field definition for the field tag recorded in subfield ǂ9.

891	2	0	ǂ9 853 ǂ8 1 ǂa v. ǂb no. ǂu 6 ǂv r ǂi (year) ǂj (month) ǂw b ǂx 01 ǂy pm 01/02,03/04,05/06,07/08,09/10,11/12
891	4	1	ǂ9 863 ǂ8 1.1 ǂa 3 ǂb 1 ǂi 1997 ǂj 01/02
891	2	0	ǂ9 854 ǂ8 1 ǂa v. ǂb suppl. ǂv r ǂi (year)
891	4	1	ǂ9 864 ǂ8 1.1 ǂa 7 ǂb 1 ǂi 2001

Indexing

Field 891 is not indexed.

MARC 21

Field 891 is OCLC-defined and therefore not included in MARC 21 Format for Bibliographic Data.

This page last revised: June 29, 2021

8xx Fields