21.30G. Related works
General:
Formulate the added entry for another work according to the appropriate AACR2 rule for the choice of main entry, form of heading, and form of the title proper (or the uniform title). Apply this both to simple and to analytical added entries (cf. LCRI 21.30M ).
Use in the added entry the established AACR2 form for the work when that information is available (e.g., an AACR2 bibliographic or authority record for the work already exists). If that information is not available, apply the following:
LC/CONSER practice:
1. If a MARC record (FN 1 ) exists for the work but there is no evidence that the entry for the work is in AACR2 form, determine the work's AACR2 form and recatalog the entry for the work. Update added entries on related records if not in accord with AACR2 (in both the choice of main entry and in the form for the main entry heading and the title).
2. If there is no MARC record for the work, establish its AACR2 form and create a name authority record.
NACO practice: Establish its AACR2 form and create a name authority record.
Selected Issues of Periodicals Published Separately:
When cataloging a separately published issue of a periodical (cf. LCRI 1.6 ), make a related work added entry for the periodical itself.
Unnumbered Supplement or Special Number to a Serial:
When cataloging an unnumbered supplement or special number to a serial, make a related work added entry for the serial itself. It is not a series added entry because the unnumbered supplement or special number is not considered to be a series (cf. LCRI 1.6 ).
1. For a special number, formulate an added entry consisting of the name of the serial and, in subfield $p, "Special number" in English.
2. If the supplement relates to the serial as a whole, formulate an added entry consisting of the name of the serial and, in subfield $p, "Supplement" in English.
3. If the supplement relates to a particular issue of a serial, formulate an added entry consisting of the name of the serial and, in subfield $n, both the number of the issue and the qualifier "(Supplement)" in English.
LC practice: If the supplement is to a title for which a series authority record exists, give the numbering in the form specified on the series authority record. This will insure that the added entry for the supplement to a particular number will file in proper relation to any series added entry for that number.
Note. A supplement that is numbered only in relation to a particular number of a serial (e.g., supplements 1 and 2 to v. 10, no. 1 of the serial) is considered to be unnumbered since there isn't a separate numbering system for that supplement.
LC practice: For such a supplement numbered in relation to the number of the serial, formulate the added entry as described above but include the number in the qualification.
See also:
21.30. Specific Rules (Added Entries)
