Cataloger's Reference Shelf
MARC 21 Format for Authority Data
Cataloger's Reference Shelf
MARC 21 Format for Authority Data
09X Local Call Numbers (Variable Data Field)
Field definition and scope:
The 090-099 fields are reserved for a locally assigned call number for a series when all or part of the series is classified as a collected set or with the main series (646 Series Classification Practice, subfield $a, code c or m). For interchange purposes, the practices used in fields 09X should be known by parties involved in the interchange.
The National level record requirement for these fields is Optional.
Content designator history:
090
- Local Call
Number [obsolete]: Field 090 was made obsolete in all
MARC specifications when the entire 09X block of numbers was reserved
for local use and definition in 1982. Prior to that change, the
field was defined for series call numbers. In USMARC, both indicators
were undefined. In CAN/MARC, the first indicator values were: 0 (Current call number) and 1 (Earlier call number). The
subfield codes were: $a
(Classification number), $b (Item
number), and $d (Volumes/dates
to which call number applies).
Related MARC field or document:
646 Series Classification Practice
See also:
