TY  - BOOK
AU  - "Gupta, Prem Kumar"
AU  - " Hira, D.S."
TI  - Operation Research
SN  - 9788121902816
U1  - 654.403 
PY  - 2008///
CY  - New Delhi
PB  - S. chand company Pvt. Ltd.
N1  - "Doneted by Dr. Moujesh Agrawal, Nagpur"
ER  -