Liu, Chung Laung. <br/><br/>
Elements of discrete mathematics 

 - New York :  McGraw-Hill,  1977 
 - 294 p.  : Gráfs. 
 - McGraw-Hill Computer Science Series .
 - McGraw-Hill Computer Science Series .
<br/><br/><label>LCCN: </label>31010 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra abstracta.<br/>Analisis combinatorio.
<br/><br/><label>Dewey Class. No.: </label>511.6  / L5