TY  - BOOK
AU  - Gupta, Prem Kumar
AU  - Hira, D.S
TI  - Problems in operations research: : Principles and solutions
SN  - 978-81-219-0968-6
U1  - 001.424 
PY  - 2016///
CY  - New Delhi
PB  - S. Chand & Company Pvt. Ltd.
ER  -