Guidelines for 050 on BIBCO records for artists, musicians and literary
- Use the LC number if it can be determined from the utility.
- If the number used by LC is not available, a locally-assigned number
can be used in the 050 field.
- Although we may supply the entire call number in an 050 field, BIBCO
only requires the subfield "a" portion. In cases where LC's class number
and our locally-assigned number are different, we only need to supply
the subfield "a" portion of LC's number to fulfill the BIBCO requirements.