TY  - BOOK
AU  - Gupta, P.K. and D.S. Huia
TI  - Operations research:for engineering computer science commerce &management 
SN  - 812902819
AV  - T 57.6 G87 2007 
PY  - 2007///
CY  - S. Chand &Co
PB  - New Delhi
ER  -