TY  - BOOK
AU  - P. K. Gupta,
TI  - Operations research
SN  - 8121902189
AV  - T 57 .6 .G87 2000
PY  - 2000///
CY  - Ram Nagar, New Delhi
PB  -  S. Chand & Company Ltd., 
KW  - Operations research.     Operations Research
ER  -