Levin, Oscar, <br/><br/>
Discrete mathematics :  an open introduction / 
Oscar Levin. 
 - 2nd edition. 
 - xiv, 330 pages :  illustrations ;  28 cm. 
 - Updated irregularly 
 - Open textbook library .
 - Open Textbook Library. .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9781534970748 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.<br/>Graph theory.<br/>Computer science--Mathematics.
<br/><br/><label>Dewey Class. No.: </label>510  / LEV 2017