00575nam a2200157 a 450000100080000000500110000800800410001910000150006024501450007526001000022065000160032065300200033665300180035665300260037470000170040019148022016-10-06       2011    bl uuuu     u00u1 u    #d1 aNAUMOV, A.  aGIS as a tool for balanced fertilization and sustainable development of agriculture in the savannas of South America.h[electronic resource]  aIn: REGIONAL GEOGRAPHIC CONFERENCE, 2011, Santiago. Conference proceedings. Santiago: IGMc2011  aAgricultura  aAmérica do Sul  aFertilizantes  aModelos sustentáveis1 aPRADO, R. B.