TY  - BOOK
AU  - Prem kumar Gupta & D S Hira
AU  - Prem kumar Gupta & D S Hira
AU  - Prem kumar Gupta & D S Hira
AU  - Prem kumar Gupta & D S Hira
TI  - Operations Research
PY  - 2000///
PB  - S.CHAND
ER  -