Liu, C.L. <br/><br/>
Elements of discrete mathematics   
by C L Liu 
 - New York  McGraw-Hill  1977 
 - x, 294p 
 - Computer science series .
<br/><br/><label>ISBN: </label>0070381313 
<br/><br/><label>Dewey Class. No.: </label>511  / N77;1