Loehr, Nicholas A, <br/><br/>
Combinatorics :  Discrete mathematics and its application /  Textual Documents 
by Nicholas A Loehr . 
 - 2nd ed. 
 - New York  CRC Press Taylor &Francis Group 
 - xxiv, 618p:  25cm. 
<br/><br/><label>ISBN: </label>9781498780254 
<br/><br/><label>Subjects--Index Terms: </label>Mathematics Combinatorics, Discrete mathematics PG-Mathematics 
<br/><br/><label>Dewey Class. No.: </label>511.6