Hellerman, Herbert. <br/><br/>
Digital computer system principles   
by Herbert Hellerman. 
 - New York  McGraw-Hill  1967 
 - 424p.  incl. app., ind. 
 - McGraw-Hill computer science series. .
<br/><br/><label>LCCN: </label>67-14671 
<br/><br/><label>Dewey Class. No.: </label>001.64044  / N672