Dobbs, T.L. Smolik, J.D. Mends, C.
On-farm research comparing conventional and low-input sustainable agriculture systems in the Northern Great plains Sustainable agriculture research and education in the field; a proceedings - Washington, D.C. (EUA) National Academy Press 1991 - p. 250-265
13 ref.
On-farm research comparing conventional and low-input sustainable agriculture systems in the Northern Great plains Sustainable agriculture research and education in the field; a proceedings - Washington, D.C. (EUA) National Academy Press 1991 - p. 250-265
13 ref.