Definition | The current publication frequency of a continuing resource (serial or integrating resource). See Freq (Frequency) and Regl (Regularity) and field 321 (Former Publication Frequency) for more information. |
1st Indicator | Undefined. The 1st indicator position is undefined and contains a blank (  ). |
| | | | Undefined | |
2nd Indicator | Undefined. The 2nd indicator position is undefined and contains a blank ( ). |
| | | | Undefined | |
Subfields | |
| ‡a Current publication frequency | A note that describes the frequency of the continuing resource. Use the following guidelines to enter information in subfield ‡a so that your notes print correctly. - Capitalize the first letter of the first word in subfield ‡a.
- Enter a comma between subfields ‡a and ‡b.
- Do not enter final punctuation unless the field ends with an abbreviation.
- If the field begins with a number and does not have field 321, spell out the number.
| 310 | | | Seven issues yearly, ‡b Jan. 1986- | | [No field 321 is used.] | - If the record has a 310 field and one or more 321 fields, use Arabic numerals in field 310 and spell out the number in the first field 321.
| 310 | | | 4 issues yearly, ‡b Aug. 1904- | | 321 | | | Five issues yearly, ‡b 1901-June 1904 | | 310 | | | Monthly, ‡b 1949-1956 | | 321 | | | Five issues yearly, ‡b 1947 | | 321 | | | 14 issues yearly, ‡b 1948 | |
| ‡b Date of current publication frequency | Date of current publication frequency. Use for dates if the beginning date of the current frequency is not the same as the beginning date of publication. |
Printing | The following rules govern printing of current, multiple, and former frequency notes: |
| | - The current and former frequencies (field 310 and field 321) print as the first note.
- Former frequencies ( field 321) print first in order of their appearance in the record, which should be earliest to most recent.
- Current frequency (field 310) prints following former frequencies.
- Multiple frequency statements print in the order of earliest to most recent.
|
| AACR2 records | The print program supplies a comma and a space between multiple frequency statements. The print program also supplies a period at the end of the note unless final punctuation (. ! ?) is present. | 310 | | | Monthly, ‡b 1949-1956 | | 321 | | | Five issues yearly, ‡b 1947 | | 321 | | | 14 issues yearly, ‡b 1948 | | Five issues yearly (1947), 14 issues yearly (1948), Monthly, (1949-1956). | The print program supplies parentheses around the dates in subfield ‡b of fields 310 and 321. If the final character in subfield ‡b is a hyphen, the print program supplies three spaces before the closing parenthesis. | Freq: | | | m | | Regl: | | | r | | 310 | | | Monthly, ‡b 1968- | |
| Pre-AACR2 records | The print program supplies a semicolon and a space between multiple frequency statements. The print program also supplies a period at the end of the note unless final punctuation (.? !) is present. | 310 | | | 5 no. a year, ‡b 1945-48 | | 321 | | | Four no. a year, ‡b 1931-44 | | Four no. a year, 1931-44; 5 no. a year, 1945-48. | |
| Records with no 310 fields | If a record has no 310 field, the print program supplies a frequency note based on the Freq code. See Freq (Frequency) for more information. |
