TY  - BOOK
AU  - Tiwari,N K  .
AU  - Shandilya,Shishir  .
TI  - Operations research / 
SN  - 9788120329669
U1  - 658.4034 
PY  - 2006///
CY  - New Delhi : 
PB  - PHI learning Pvt. Ltd. , 
KW  - Operations research
ER  -