074 Subfield $a - GPO item number:

Subfield $a contains the GPO item number. Qualifiers such as MF for microfilm are included in subfield $a.

Examples:

074 ##$a334-C-1

074 ##$a277-A-2 (MF)

074 ##$a1002-A

074 ##$a1002-B (MF)

[Two GPO item numbers associated with one record.]