TY  - BOOK
AU  - Gupta,Prem Kumar
AU  - Hira,D.S.
TI  - Problems in operations research : : principles and solutions / 
SN  - 9788121909686
U1  - 003 GUP 23
PY  - 2007///
CY  - New Delhi
PB  - S.Chand & Company Ltd
KW  - Operations Research
ER  -