Reetz, H.F. Jr.
Low-input sustainable agriculture projects, alternative agriculture, and related issues Sustainable agriculture research and education in the field; a proceedings - Washington, D.C. (EUA) National Academy Press 1991 - p. 279-288
1 ref.
Low-input sustainable agriculture projects, alternative agriculture, and related issues Sustainable agriculture research and education in the field; a proceedings - Washington, D.C. (EUA) National Academy Press 1991 - p. 279-288
1 ref.