TY  - BOOK
AU  - Gupta, Prem Kumar .
AU  -  Hira, D S.
TI  - Problems in operations research : principles and solutions
SN  - 8121909686 ;9788121909686
U1  - 3.076 
PY  - 1991///
CY  -  New Delhi
PB  -  S. Chand, 
KW  - Operations research
N1  - Includes index
ER  -