TY  - BOOK
AU  - Gupta P ,.
AU  - Hira D,
TI  - Operations  Research
SN  - 8121902819
U1  - 001.42 
PY  - 2014///
CY  - New Delhi
PB  - S . Chand and Company Pvt Ltd New Delhi
KW  - Research Methodology (ME)
ER  -