TY  - BOOK
AU  - Gupta, Prem Kumar
AU  - Hira, D.S.
TI  - Operations Research
SN  - 8121902819
SN  - 2035
U1  - 001.424             
PY  - 1990///
CY  - New Delhi
PB  - S Chand and  Company Ltd.
KW  - Operations Research 001.424
ER  -