Biswal, Purna Chandra. <br/><br/>
Discrete mathematics and graph theory / 
By Purna Chandra Biswal. 
 - 2nd ed. 
 - New Delhi :  PHI Learning Pvt Ltd ,  2009. 
 - xviii,490p. ;  23 cm. 
<br/><br/><label>ISBN: </label>9788120338807 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Binary operation and algebra<br/>System with one binary operation <br/>Counting principle
<br/><br/><label>Dewey Class. No.: </label>511.8   / BISP