TY  - BOOK
AU  - Kalavathy S. 
TI  - Operation research: an introduction 
SN  - 81-259-0832-2 
U1  - 00 3 KAL  
PY  - 2000///
CY  - Vikas publishing house pvt. ltd. 
PB  - New Delhi 
KW  - OPERATION RESEARCH
ER  -