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

 -  Prentice-Hall, Inc  1973 
 - xviii,366p.  ill.  24cm. 
<br/><br/><label>ISBN: </label>0-13-637843-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Time sharing computer system
<br/><br/><label>LC Class. No.: </label>COMP QA76.5.B76