International Society of Organic Agriculture Research <br/><br/>
Researching Sustainable Systems 

 - Germany  International Society of Organic Agriculture Research  2005 
 - 660p 
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>3-906081-76-1 
<br/><br/><label>Dewey Class. No.: </label>631.584  / ISOFAR