Richard A. Brualdi  <br/><br/>
Introductory Combinatorics  
Richard A. Brualdi  
 - 4th ed. 
 - New Delhi India  Pearson   2004 
 - 630 p.  Pb. 
<br/><br/><label>ISBN: </label>9788131718827 
<br/><br/><label>Dewey Class. No.: </label>511.6