TY  - BOOK
ED  - US. Library of Congress. Descriptive Cataloging Division
TI  - Rules for descriptive cataloging in the Library of Congress
U1  - 025.3 
PY  - 1949///
CY  - Washington
PB  - Descriptive Cataloging Division
KW  - Cataloging
KW  - Descriptive cataloging
N1  - Supplement 1949-51, 1952
ER  -