AT&T Information systems <br/><br/>
The unix system user''s MANUAL 

 - 
 -  Prentice-Hall  1986 
 - 637 
<br/><br/>  
<br/><br/><label>ISBN: </label>0-13-938242-9 
<br/><br/><label>Dewey Class. No.: </label>004.451