TY  - BOOK
AU  - Gupta,Prem kumar
AU  - Hira,D S  .
TI  - Operations research / 
SN  - 8121902819
U1  - 003 
PY  - 2007///
CY  - New Delhi : 
PB  - Sultan Chand , 
KW  - OPERATIONS RESEARCH
N1  - Includes index
ER  -