TY  - BOOK
AU  - Bopp Richard E. ed
AU  -  Smith Linda C. ed
TI  - Rerfernce & information services :  An introduction
T2  - Library science text series
U1  - 2:7, N1 (2D) 
PY  - 1991///
CY  - Colorado
PB  - Libraries Unlimited      
KW  - LIBRARY SCIENCE
ER  -