TY  - BOOK
AU  - Ravindran, A  ;.
AU  - Phillips,Don T;  .
AU  - Solberg,James J  .
TI  - Operations research: Principles and practice / 
SN  - 9788126512560
U1  - 658.4034 
PY  - 2006///
CY  - London : 
PB  - John Wiley & Sons , 
ER  -