Ritchie;Collin <br/><br/>
Operating systems  Englsh 

 - 3rd ed. 
 - New Delhi  BPB publications  2005 
 - 277pg 
<br/><br/><label>ISBN: </label>81-7656-019-7 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Computer Science
<br/><br/><label>Dewey Class. No.: </label>001.642 R51O