TY  - BOOK
AU  - Gupta , Prem Kumar.
AU  - Hira D. S.
TI  - Problems in operations research: principles and solutions 
SN  - 8121909686
U1  - 658.403  G896p  2007 22
PY  - 2007///
CY  - New Delhi
PB  - S. Chand
KW  - Operations research
N1  - BBA , MBA , EMBA
ER  -