TY  - BOOK
AU  - Prem Kumar Gupta, D.S.
AU  - Hira, D.S.
TI  - Operations research / 
SN  - 9788121902816
U1  - 658.403 4 
PY  - 2012///
CY  - New Delhi
PB  - S. Chand
KW  - Operations research-Management
KW  - Linear programming
KW  - Non-linear programming
ER  -