TY  - BOOK
AU  - Gupta, Prem Kumar
AU  - Hira, D S
TI  - Problems in operations research: Principles and solutions
SN  - 9788121909686
U1  - 658.4034 
PY  - 2021///
CY  - New Delhi
PB  - S Chand
KW  - Engineering
KW  - Operations Research -Problems
ER  -