TY  - BOOK
AU  - Gupta, Prem Kumar
AU  - Hira, D S
TI  - Operations research
SN  - 9788121902816
U1  - 658.4034 
PY  - 1976///
CY  - New Delhi
PB  - S Chand and Company Limited
KW  - Operations research
KW  - Programming (Mathematics)
ER  -