TY  - BOOK
AU  - kolman,Bernard
AU  - Busby,Robert C.,Ross,Sharon Cutler
TI  - Discrete mathematical structures/ 
SN  - 9788120336896
U1  - 511.1  
PY  - 2006///
CY  - New Delhi
PB  - Printice Hall
KW  - Mathematical models -
ER  -