050 Library of Congress Call Number - OCLC
https://www.oclc.org/bibformats/en/0xx/050.html
WEBMar 20, 2024 · Use field 050 with 1st indicator value blank and 2nd indicator value 4 for LC call numbers and classification numbers assigned by agencies other than LC. If the classification portion of your number does not conform to the LC class schedules, use field 099. Use field 055, field 060, or field 070 for call numbers based on LC classification ...
DA: 99 PA: 2 MOZ Rank: 10