TY  - GEN
AU  - Gupta , Prem Kumar
AU  - Hira , D.S.
TI  - Operations research
SN  - 8121902189
U1  - 658.4034 
PY  - 1979///
CY  - New Delhi
PB  - S.Chand
KW  - OPERATIONS RESEARCH
KW  - MANAGEMENT
ER  -