Chuan-Chong, Chen <br/><br/>
Principles and techniques in combinatorics 

 - Singapore  World Scientific  1992 
 - xii, 298p.  
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9810211392 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coefficients -- binomial<br/>Combinatorics<br/>Mathematics<br/>Pigeonhole principle<br/>Ramsey numbers