Loehr, Nicholas A.  <br/><br/>
Combinatorics  / 

 - 2nd 
 - CRC Press:  Boca Raton,  2018 
 - xxiv, 618p. Bibl. Index 
 - Discrete Mathematics and Its Applications .
<br/><br/><label>ISBN: </label>9781498780254 
<br/><br/><label>Dewey Class. No.: </label>511.6  / L825.CO