Heimer, Ralph T. [et.al.] <br/><br/>
Basic computer concepts  A self instructional approach 
by Ralph T. Heimer [et.al.] 
 - New York  Bogden & Quigley  1972 
 - viii, 140p.  incl. ind. 
<br/><br/><label>ISBN: </label>0800500296 
<br/><br/><label>LCCN: </label>73-181702 
<br/><br/><label>Dewey Class. No.: </label>001.64  / N7213