TY  - BOOK
AU  - Basu, S K .
AU  - Bagchi,H  .
AU  - Pal,D K  .
TI  - Operational research for engineers / 
U1  - 658.4034 
PY  - 1989///
CY  - New Delhi : 
PB  - Oxford & IBH Publishing company , 
ER  -