050 LIBRARY OF CONGRESS CALL NUMBER (R)Indicators First Existence in LC collection # No information provided 0 Item is in LC 1 Item is not in LC Second Source of call number # No information provided OBSOLETE 0 Assigned by LC 4 Assigned by agency other than LCSubfield Codes $a Classification number (R) $b Item number (NR) $d Supplementary class number (MU) OBSOLETE $3 Materials specified (NR)