TY  - GEN
AU  - Gupta, P. K.
AU  - Hira, D S 
TI  - Operations Research
SN  - 9788121902816
U1  - 658.4034 GUP 
PY  - 2018///
CY  - New Delhi
PB  - S. Chand & Company Pvt. Ltd.
KW  - Operations Research
ER  -