TY  - GEN
AU  - Gupta, Prem Kumar
AU  - Hira, D. S.
TI  - Problems in operations research: principles and solutions
SN  - 8121909686
U1  - 658.4034 
PY  - 1991///
CY  - New Delhi
PB  - S. Chand 
KW  - OPERATIONS RESEARCH
KW  - MANAGEMENT
KW  - PROBLEM AND EXERCISE
ER  -