TY  - GEN
ED  - The Library of Congress
TI  - Symbols used in the National Union Catalog of the Library of Congress
U1  - 018.1 21
PY  - 1959///
CY  - Wasington
PB  - Procesing Department
KW  - ABREVIATURAS
KW  - BIBLIOTECAS
KW  - ESTADOS UNIDOS
ER  -