Groff, James R. <br/><br/>
Understanding UNIX :  a conceptual guide /  [Books]. 
James R. Groff, Paul N. Weinberg. 
 - Indianapolis :   Que Corp.,   1983. 
 - xvi, 238 p. :   ill. ;   24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0880220643 
<br/><br/><label>LCCN: </label>83003256 
<br/><br/><label>Subjects--Personal Names: </label><br/>UNIX (Computer file).
<br/><br/><label>Subjects--Uniform Titles: </label><br/>UNIX (Computer file)