Wallis, W. D <br/><br/>
Introduction to combinatorics/ 
W.D. Wallis and J.C. George 
 - Boca:  CRC Press,  2015. 
 - xvi,380p.  25cm. 
<br/><br/><label>ISBN: </label>9781439806227 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Combinatorial analysis	
<br/><br/><label>Dewey Class. No.: </label>511.6  / WAL/I