TY  - BOOK
ED  - U.S. Library of Congress.
TI  - Classification, Class Z, bibliography and library science
SN  - 0844403407
U1  - 025.4602 
PY  - 1980///
CY  - Washington
PB  - The Library, 
KW  - CLASIFICACION
KW  - BIBLIOGRAFIAS
KW  - LIBROS
ER  -