Lipschutz, Seymour. <br/><br/>
2000 solved problems in discrete mathematics / 
by Seymour Lipschutz, Marc Lipson. 
 - New York :  McGraw-Hill,  1992. 
 - iv, 404 p. :  ill. ;  28 cm. 
 - Schaum's solved problems series. .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0070380317 
<br/><br/><label>LC Class. No.: </label>QA43