TY  - BOOK
AU  - Gupta, Prem Kumar.
AU  - Hira, D S.
TI  - Operations Research
SN  - 8121902819
U1  - 001.424 GUP-HIR 
PY  - 2016///
CY  - New Delhi
PB  - S.Chand & Co. Pvt. Ltd.
ER  -