Groff, James R <br/><br/>
Understanding unix : a conceptual guide 

 - Indiana  QUE Corporation  1983 
 - xx, 263p. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>880220643 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating system<br/>Operating system -- Unix