OELHAF C. ROBERT <br/><br/>
ORGANIC AGRICULTURE 

 - NEW YORK  1978 
<br/><br/><label>ISBN: </label>0470-26427 6 
<br/><br/><label>LC Class. No.: </label>338.16/OEL  / 1 
<br/><br/><label>Dewey Class. No.: </label>338.16/OEL  / 1