Chorafas, Dimitris N. <br/><br/>
Fourth and fifth generation programming languages; vol.2:Which UNIX? AT&T,IBM and other standard bearers 

 - New York  McGraw-Hill  1987 
 - xvi, 374p.  24 cm. 
<br/><br/><label>ISBN: </label>0071001662 
<br/><br/><label>Dewey Class. No.: </label>005.133,  / D, Cho