Heck, Hans-Josef. <br/><br/>
UNIX. 
Hans-Josef Heck 
 - London:  Prisma Computer courses,  1993. 
 - 335p. 
<br/><br/><label>ISBN: </label>9 781853 653803 
<br/><br/><label>Subjects--Topical Terms: </label><br/>UNIX