Das, Sumitabha <br/><br/>
UNIX  Concept and application 
/ by Sumitabha Das 
 - 4th 
 - New Delhi   Tata McGraw-Hill   2006 
 - XXI, 671p. 
<br/><br/> UNIX, COMPUTER LANGUAGE 
<br/><br/><label>ISBN: </label>0-07-063546-3 
<br/><br/><label>Dewey Class. No.: </label>005.282  / SUM/U