Levy, Leon S. <br/><br/>
Dicrete structure of computer science   
by Leon S. Levy 
 - New York  John Wiley  1980 
 - 310p. 
<br/><br/><label>ISBN: </label>0471032085 
<br/><br/><label>Dewey Class. No.: </label>519.4  / N8011 R(T)