Trevennor, Alan. <br/><br/>
Operating systems :  a user-friendly guide /  [Books]. 
Alan Trevennor.  
 - Wilmslow :   Sigma Technical,   [1984] 
 - 167pages. :   illustration., fascism. ;   22cm. 
<br/><br/> Include index 
<br/><br/>Includes bibliographical reference (page 154-156) and index 
<br/><br/><label>ISBN: </label>0905104668 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers)