Rao, Chandrasekhara K. <br/><br/>
Dsicrete Mathematics 

 - New Delhi;  Narosa Publishing House  2012 
 - 432p. 
<br/><br/><label>ISBN: </label>978-81-8487-135-7 
<br/><br/><label>Dewey Class. No.: </label>511.1 R26D