Governmental support of ecological agriculture in industrialized countries (Review)

agricultura alternativa agricultural and rural legislation agriculture alternative alternative farming asociaciones de agricultores association d'agriculteurs comunidades europeas droit agricole et rural europa occidental europe occidentale european communities extension extension activities farm income farm size farmers associations land policies normas norme politique de soutien projet de recherche research projects revenu de l'exploitation standards subsidies subsidios subvention support measures taille de l'exploitation agricole vulgarisation western europe