Andreescu, Titu,  1956- <br/><br/>
A path to combinatorics for undergraduates :  counting strategies / 
Titu Andreescu, Zuming Feng 
 - Boston :  Birkhauser,  2004 
 - xviii, 228 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references (p. 221-225) and index 
<br/><br/><label>ISBN: </label>0817642889 (alk. paper)  RM168.12 3764342889 (alk. paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Combinatorial analysis<br/>Combinatorial number theory