TY  - BOOK
AU  - Gupta, Premkumar  
AU  - Hira,  D.S.
TI  - Operations Research
SN  - 8121902819 
U1  - 519.8 
PY  - 2012///
CY  - New Delhi
PB  - S.Chand & Company
N1  - Includes Index
ER  -