Brinch Hansen, Per,  1938- <br/><br/>
Operating system principles. 

 - Englewood Cliffs, N.J.,  Prentice-Hall  [1973] 
 - xviii, 366 p.  illus.  25 cm. 
<br/><br/><label>ISBN: </label>0136378439 
<br/><br/><label>LCCN: </label>73000491  
<br/><br/><label>LC Class. No.: </label>QA76.5 .B76  / .B76 
<br/><br/><label>Dewey Class. No.: </label>001.6/44/04