Required field.
LC code for the cataloguing agency.
Subfield $a contains the LC code for the cataloguing agency.
Subfield $b contains the 3-letter code for the language of
the cataloguing agency (eng).
Tags 039 and
040 contain the appropriate codes
for the cataloguing agency.
They do not refer to an agency's
holdings data or other local information.
Therefore, if an agency removes its
holdings data (tags 099, item
record) from a cataloguing record that it created, its status as cataloguing
agency for the record is not affected. For instance, if UNOG Library removes
its holdings data from a record created by UNOG Library staff, the cataloguing
source in 039 and 040 remain UNOG codes.
If an incomplete ("pre-indexing" or
"check-in only") record created by one agency is completed by another agency,
in that case the agency that completes the record becomes the cataloguing
agency.
Examples:
040 $aNNUN $b eng [Dag Hammarskjöld Library]
040 $aSzGeBNU $b eng [UNOG Library]
040 $aTH-BaUNE $b eng [ESCAP Library]
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