TY  - BOOK
AU  - Gupta, Prem Kumar;Hira, D S.
TI  - Problems in operations research: principles and solutions: Principles and solutions
SN  - 8121909686
U1  - 003 GUPP 
PY  - 2005///
CY  - New Delhi
PB  - S Chand and Company Ltd
KW  - Operations Research
ER  -