00463nam a2200145 a 450000100080000000500110000800800410001910000220006024500960008226000510017830000100022965300250023965300250026465300280028910551522007-09-10 1984 bl uuuu 00u1 u #d1 aKRAL, D. M. (Ed.) aOrganic farmingbcurrent technology and its role in a sustainable agriculture: proceedings. aMadison: Soil Science Society of Americac1984 a192p. aAgricultura familiar aAgricultura organica aAgricultura sustentavel