Keller, Laurie S. <br/><br/>
Operating systems :  communicating with and controlling the computer / 
Laurie S. Keller. 
 - New York :  Prentice Hall,  c1988. 
 - xiv, 370 p. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0136380328 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers).