TY  - BOOK
AU  - Gupta,P.K
TI  - Operations research
SN  - 8121902819
AV  - TK57.8.G8 1976 
PY  - 1976///
CY  - New delhi
PB  - s,chand higher academics
KW  - Operations research
KW  - Operational analysis
KW  - Operational research
ER  -