Polya, George <br/><br/>
Notes on introductory combinatorics 

 - Boston   Birkhauser  1983 
 - 190p 
<br/><br/><label>ISBN: </label>0817631704 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General principles of mathematics
<br/><br/><label>Dewey Class. No.: </label>511.6  / POL