Computer Operating System 
Tom Alexander 
 - 1st 
 -  Crescent  2014 
 - 268 
<br/><br/><label>ISBN: </label>9788183423182 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer
<br/><br/><label>Dewey Class. No.: </label>004.16  / ALE