Brualdi, Richard A. <br/><br/>
Introductory combinatorics / 
Richard A. Brualdi 
 - 5th ed. 
 - India  Pearson  2020 
 - 605 p. 
<br/><br/><label>ISBN: </label>9789353433062 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Combinatorial analysis<br/>Pigeonbole<br/>Permutations
<br/><br/><label>Dewey Class. No.: </label>511.6 BRU-R