TY  - BOOK
AU  - GUPTA P. K
AU  - HIRA, D.S.
TI  - INTRODUCTION TO OPERATIONS RESEARCH
SN  - 81-219-0810-8
U1  - 658.403 4 
PY  - 1995///
CY  - 
PB  - S. Chand &  Company Ltd, New Delhi 
ER  -