Sourcery : a novel of discworld 
Pratchett, Terry. 
 -  Harper Collins Publishers.  1988 
 - 260 pages 
<br/><br/>
<br/><br/><label>ISBN: </label>0-06-102067-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fiction.
<br/><br/><label>Dewey Class. No.: </label>FIC P8872 1988