Oelhaf, Robert C <br/><br/>
Organic agriculture  economic and ecological comparisons with conventional methods 

 - New York  John Wiley  1978 
 - 271 p. 
<br/><br/><label>ISBN: </label>0470264276 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics
<br/><br/><label>Dewey Class. No.: </label>338.16  / OEL