TY  - BOOK
AU  - Taha, Hamdy A
TI  - Operations research : an introduction .-6th ed .-81-203-1222-8
SN  - 81-203-1222-8
U1  - 001.424 Tah 
PY  - 1997///
CY  - Prentice Hall of India, New Delhi
ER  -