TY  - BOOK
AU  - Gupta,P.K .
AU  -  Hira,D. S
TI  - An introduction to operational research
SN  - 0582013496
U1  - 658.4034 23
PY  - 1995///
CY  - Delhi
PB  - s.chand & company ltd.
KW  - Operations research
N1  - include index
ER  -