TY  - BOOK
AU  - Ravindran,A.
AU  - Philips,Don T.
AU  - Solberg,James J.
TI  - Operations research: principles and practice 
SN  - 9971513021 :
AV  - T57.6 .R38 1986
PY  - 1986///
CY  - New York
PB  - John Wiley & Sons
KW  - Operations research
ER  -