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

 - 2nd ed 
 - John Wiley & Sons, New Delhi  2003 
 - xi, 556 
<br/><br/><label>ISBN: </label>978-81-265-3761-7 
<br/><br/><label>Dewey Class. No.: </label>511.6 Mer