TY  - GEN
AU  - Gupta, P.K.
AU  - Hira, D.S.
TI  - Problems in Operations Research:  
SN  - 8121909686
U1  - 003 
PY  - 1991///
CY  - New Delhi
PB  - S. Chand & Company  Ltd
KW  - Systems
ER  -