Bach, Maurice J. <br/><br/>
The design of the UNIX operating system / 
by Maurice J. Bach. 
 - New Delhi :  Pearson education,  c1990 [2006]. 
 - 479 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>
<br/><br/><label>ISBN: </label>8177587706 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer operating system
<br/><br/><label>Dewey Class. No.: </label>005.432  / BAD