Hansen, Per Brinch <br/><br/>
Operating system principles 

 - 1st ed.  
 -  New Delhi : PHI,  1973 
 - x+303 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems
<br/><br/><label>Dewey Class. No.: </label>001.642  HAN;3