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

 - 2 
 - Singapore  Tech Publications  1988 
 - xiv, 234p. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9813091037 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating system<br/>Operating system -- Unix