TY  - BOOK
AU  - Biswal, Purna Chandra.
TI  - Discrete mathematics and graph theory
SN  - 9788120338807
U1  - 511.8  2
PY  - 2009///
CY  - New Delhi
PB  - PHI Learning Pvt Ltd
KW  - Binary operation and algebra
KW  - System with one binary operation
KW  - Counting principle
ER  -