TY  - BOOK
AU  - Hillier, Federick S
AU  - Lieberman, Gerald J
TI  - Introduction to Operation Research: Concepts and Cases 
SN  - 9780070600928
U1  - 658.4034 
PY  - 2006///
CY  - New Delhi
PB  - Tata McGraw-Hill Publishing Company Ltd.
ER  -