00631nam a2200157 a 450000100080000000500110000800800410001910000230006024501400008326001670022330000120039065000130040265000230041565000260043865000090046419762992022-08-12       1993    bl uuuu     u00u1 u    #d1 aBRIENZA JUNIOR, S.  aEvaluation of soil organic matter in some agricultural prodction systems of the eastern Amazonbobjectives, hypothesis and methodology.  aIn: SHIFT-WORKSHOP, 1., 1993, Belém, PA. Summaries of lectures and posters... [S.l.]: German/Brazilian Cooperation in Environmental Research and Technologyc1993  ap. 159.  aAmazonia  aMatéria Orgânica  aSistema de Produção  aSolo