TY  - BOOK
AU  - Gupta,P.K.
AU  - Hira,D.S.
TI  - Problems in Operation Research 
SN  - 8121909686 (paperback)
U1  - 003GUP 
PY  - 2010///
CY  - New Delhi
PB  - S Chand & Co Ltd
KW  - Operations research
UR  - http://www.amazon.com/exec/obidos/ASIN/8121909686/chopaconline-20
ER  -