Groff, James R. <br/><br/>
Understanding UNIX :  a conceptual guide / 
James R. Groff, Paul N. Weinberg. 
 - Indianapolis :  Que Corporation,  1983. 
 - xvi, 233  p. 
<br/><br/><label>ISBN: </label>0880220643 :  KES 200 
<br/><br/><label>Subjects--Topical Terms: </label><br/>UNIX (Computer file)<br/>Operating systems (Computers)