valerie Quercia,Tim O''Reilly <br/><br/>
X window system user''s guide 

 - 
 -  O Reilly & Associates  1990 
 - 723 
<br/><br/>  
<br/><br/><label>ISBN: </label>0-937175-14-5 
<br/><br/><label>Dewey Class. No.: </label>004.451