TY  - BOOK
AU  - Gupta,P.K.
AU  - Manmohan,
TI  - Problem in operations research: (method and solution) 
SN  - 8170149193 (pbk) :
U1  - 519.7 
PY  - 2002///
CY  - New Delhi
PB  - Sultan Chand
KW  - Operations research
ER  -