TY  - BOOK
AU  - Gupta/P.K/ Man/ Mohan 
TI  - Problems  in Operations  Research 2nd ed
U1  - 658.4034 GUP 
PY  - 1992///
CY  - New Delhi
PB  - Sultans Chand & Sons
KW  - Operation research  2nd ed
ER  -