Alternative methods of agriculture / 
edited by R. Boeringa 
 - Amsterdam :  Elsevier Science,  1980 
 - 199 p. :  ill. ;  25 cm. 
 - Developments in agricultural and managed-forest ecology  v. 10 .
<br/><br/><label>ISBN: </label>0444418938 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Organic farming<br/>Agriculture<br/>Animal husbandry<br/>Tillage<br/>Cropping systems