TY  - BOOK
AU  - Kolman, Bernard , Kolman, Bernard ,  Robert, Busby C., Cutler Ross Sharon.
AU  -  Robert, Busby C.
TI  - Discrete Mathematical Structures 
SN  - 978-81-7758-120-1 
U1  - 511 
PY  - 2008///
CY  - New Delhi
PB  - Pearson Eduction 
ER  -