Lovasz, Laszlo <br/><br/>
Combinatorial problems and exercises   

 - 2nd 
 - Providence  American Mathematical Society  2012 
 - 639p. Bibl. Index. 
<br/><br/>  
<br/><br/><label>ISBN: </label>9780821887080 
<br/><br/><label>Dewey Class. No.: </label>511.6  / L896.CP