ROLING,N.G. <br/><br/>
Facilitating sustainable agriculture 

 - 1st 
 -  Cambridge. Cambridge universi  ty press   1997 
 - xxvi, 318 
<br/><br/><label>ISBN: </label>0-521-58174-5 o 
<br/><br/><label>Dewey Class. No.: </label>630