TY  - BOOK
AU  - Hillier, Frederick S.
AU  - Lieberman,Gerald J.
AU  - Nag, Bodhibrata
AU  - Basu, Preetam
TI  - Introduction to operations research/9th ed
SN  - 978-0-07-133346-7
U1  - 519.8 
CY  - New Delhi
PB  - Tata McGraw Hill Education
KW  - Operations research
ER  -