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Contents   Fixed field   0xx   1xx   2xx   3xx   4xx   5xx   6xx   7xx   8xx   9xx

Freq  Frequency


Bytes

 CNR: 008/18; 006/01

Input standards

 CNR: Optional. One-character code. Default: fill character

Definition

 The frequency of an item, or, in the case of integrating resources, updates to an item.

Codes
fill character No attempt to code the position.
blank character No determinable frequency. The item has no determinable frequency. Use when the frequency is known to be intentionally irregular.
a Annual. The item is issued or updated once a year.
b Bimonthly. The item is issued or updated every two months. Use also for publications whose frequency is identified as six, seven or eight numbers a year.
c Semiweekly. The item is issued or updated twice a week.
d Daily. The item is issued or updated once a day. May include Saturday and Sunday.
e Biweekly. The item is issued or updated every two weeks.
f Semiannual. The item is issued or updated twice a year. Use also for publications whose frequency is identified as two numbers a year.
g Biennial. The item is issued or updated every two years.
h Triennial. The item is issued or updated every three years.
i Three times a week. The item is issued or updated three times a week.
j Three times a month. The item is issued or updated three times a month.
k Continuously updated. The item is updated more frequently than daily.
m Monthly. The item is issued or updated every month. Includes frequencies of nine, ten, eleven or twelve numbers a year.
q Quarterly. The item is issued or updated every three months. Use also for publications whose frequency is identified as four numbers a year.
s Semimonthly. The item is issued or updated twice a month.
t Three times a year. The item is issued or updated three times a year.
u Unknown. The current frequency is not known. When code u is used in Freq, code u must also be used in Regl.
w Weekly. The item is issued once a week.
z Other. The frequency of the item cannot be defined by any of the other codes.

Assigning codes

The Freq code in a record should agree with the Regl code in that record. See field 310 and field 321 for more information.

Known irregular items. If you know the item is irregular, use blank in Freq and x in Regl.

Unknown frequency, unknown irregularity. If you do not know the frequency, and the item is not known to be irregular, use u for both Freq and Regl.

Complete in one volume, frequency given. If a serial is complete in one volume and frequency is given, follow the general instructions for Freq and Regl.

Complete in one volume, no frequency. If a serial is complete in one volume and no frequency is given, use u for both Freq and Regl.

Ceased publication. If the item has ceased publication, use the latest frequency in Freq.

Reproductions. Use the code for the frequency and regularity of the original. Use field 539 subfields ‡e and ‡f for frequency and regularity of the reproduction.

One-time reproduction. Use u for field 539 subfields ‡e and ‡f.

Inadequate expression by Freq and Regl codes. Use field 310 for current frequency if Freq and Regl codes cannot adequately express the frequency or if the beginning date of the current frequency does not coincide with the beginning date of publication. (See field 310 for more information.)

If you are using field 310, use the closest available code in Freq. If no close code is available, use z. The phrases two issues yearly, four issues yearly, six issues yearly, and twelve issues yearly are used in field 310 for serials issued in the stated number of issues, but not appearing at regular intervals. If the item is issued on a regular semiannual, quarterly, bimonthly or monthly schedule, the appropriate Freq code is sufficient. The Regl code is r.

Field 310 Freq Regl
Two issues yearly f x
Four issues yearly q x
Five issues yearly q x
Six issues yearly b x
Seven issues yearly b x
Eight issues yearly b x
Nine issues yearly m x
Ten issues yearly m x
Eleven issues yearly m x
Twelve issues yearly m x
Quinquennial z x

Frequency varies note. If the record has a "Frequency varies" note in field 321, use z in Freq and x in Regl.

Cumulations. If the record describes a serial that cumulates, use the code in Freq for the frequency of issue, including cumulation. Describe the frequency of issue and cumulation in field 310. Use the appropriate Regl code (r, n, x or u). If the serial is regular and the cumulation is a regularly numbered issue, use r in Regl. If the serial is regular and the cumulation is an extra issue, use n in Regl.

Freq: b
Regl: r
310 Bimonthly, with the last issue being cumulative for the year
Freq: m
Regl: n
310 Monthly (except July and August)

Printing

 If a record has no field 310, the print program supplies a frequency note based on the Freq code. The frequency note prints as the first note for both AACR2 and pre-AACR2 records.
 
Freq Note
blank character  Irregular
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
m Monthly
q Quarterly
s Semimonthly
t Three times a year
w Weekly

If you use u or z, no frequency note prints. If you use field 310, the print program ignores the value in Freq and field 310 (or field 321, if any) prints as the first note.

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