Information:
The 310 - Current Publications Frequency tag contains
the publication frequency of a serial. This
information is useful to the librarian and to the
library user. Information about frequency will help
the library user who may want to know how often the
serial comes out and when the next issue is expected.
The information helps the librarian in assessing
whether the library has received all the issues and in
claiming missing issues.
The Anglo American Cataloging Rules (AACR2)
discusses how to record the frequency of a serial in
rule 12.7B1. RDA 2.14.1.3 instructs how to record
the frequency providing a list of terms to use.
Subfield a contains the statement of frequency. When
the frequency varies in a predictable way add this
information in parentheses following the frequency.
Subfield b contains the date the current frequency
began. When the current frequency has not changed from
the first issue of the serial subfield b is blank.
When the frequency has changed, the date of the change
is recorded here. The former frequency will be entered
in Tag 321.
Indicators
First Undefined
blank Undefined
Second Undefined
blank Undefined
Subfields
a Current publication frequency (NR)
b Date of current publication frequency (NR)
Punctuation
Subfield b is preceded by a comma.
The tag does not end with a mark of punctuation unless
the last word is an abbreviation, initial/letter, or
other data that ends with a mark of punctuation.
Examples:
310 _aMonthly (except Jan. and Aug.)
310 _aMonthly
310 _aDaily (except Sun.)
310 _aBiennial
310 _aAnnual
310 _aIrregular
310 _aMonthly (except July),
_bJan. 1975-
310 _aMonthly (except semimonthly in Aug.),
_bAug. 15, 1990-
310 _aBiennial,
_b1988-
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