TY  - BOOK
AU  - Ravindran, A.
TI  - Operations research: principles and practice
SN  - 9788126512560
U1  - 658.4034 
PY  - 2006/// (reprint 2009)
CY  - New Delhi
PB  - Wiley India
KW  - Phillips, Don T. 
KW  - Solberg, James J.
KW  - Operation research
ER  -