Katzan, Harry. <br/><br/>
Operating systems :  a pragmatic approach / 
Harry Katzan. 
 - New York :  Van Nostrand Reinhold ,  c1973. 
 - ix, 387 p. : 
<br/><br/><label>ISBN: </label>0442242530 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers)
<br/><br/><label>Dewey Class. No.: </label>005.43  / Op