Koepf, Herbert. H. <br/><br/>
Bio-dynamic agrictulture  :  an introduction  / 
Herbert H.Koepf 
 - New York :  The Anthroposophic Press ,  1976 
 - xii,429  p. :  ill.;  22cm. 
<br/><br/>Includes bibliographical references P.405-16 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Organic farming
<br/><br/><label>Dewey Class. No.: </label>630.58