Oelhaf, Robert C.,  1938- <br/><br/>
Organic agriculture :  economic and ecological comparisons with conventional methods / 
by Robert C. Oelhaf 
 - Montclair, N.J. :  Allanheld, Osmun,  1978 
 - xii, 271 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0470264276 :  USD 18.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Organic farming<br/>Agriculture<br/>Organic farming--Economic aspects<br/>Agriculture--Economic aspects<br/>Natural foods
<br/><br/><label>Dewey Class. No.: </label>338.16