TY  - BOOK
AU  - Hillier, Frederick, S Lieberman, Gerald, J 
TI  - Introduction to operations research 
SN  - 0-07-047387-0 
U1  - 003 HIL  
PY  - 2001///
CY  - Tata mcgraw hill 
PB  - New Delhi 
KW  - OPERATION RESEARCH
ER  -