WALLIS, W.D. <br/><br/>
INTRODUCTION TO COMBINATORICS 

 - Boca Raton  CRC  2011 
 - xvi+380p., 26x18Cms. 
<br/><br/><label>ISBN: </label>978143980622 
<br/><br/><label>Dewey Class. No.: </label>511.6 W214