Merris, Russell <br/><br/>
Combinatorics 

 - 2 
 - New Delhi  John Wiley  2013 
 - xix, 528p.  
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9788126537617 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Combinatorics<br/>Mathematics