TY  - BOOK
AU  - Katz, William A
TI  - Introduction to reference work
SN  - 0-07-033331-9
U1  - 025.52 21st
PY  - 1969///
CY  - New York
PB  - McGraw Hill
KW  - Reference services (Libraries); Reference books
N1  - Contents: v.1. Basic information sources
ER  -