TY  - BOOK
AU  - Katz, William A.
TI  - Introduction to reference work
SN  - 0-07-033334-7
U1  - 028.7 
PY  - 1978///
CY  - New York
PB  - McGraw-Hill
KW  - Reference books
KW  - Reference services (libraries)
N1  - V.1. Basic information sources
ER  -