Brualdi, Richard A. <br/><br/>
Introductory combinatorics  

 - New York   North-Holland,  1977 
<br/><br/><label>ISBN: </label>720486106 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Combinatorial analysis.
<br/><br/><label>Dewey Class. No.: </label>511.6 BRU