Hoffmann, Volker <br/><br/>
Hand book: Rural extension, examples and background material. 

 - Weikersheim  Margraf publishers  2009 
 - xiii, 555 p  cm 
<br/><br/><label>ISBN: </label>9783823615729 
<br/><br/><label>Dewey Class. No.: </label>371.35 EXT