00853naa a2200253 a 450000100080000000500110000800800410001910000180006024500930007826000090017130000150018065000110019565000250020665000160023165000120024765000120025965000100027165000220028165300270030365300160033065300110034665300190035777302230037615518742019-02-06       1996    bl uuuu     u00u1 u    #d1 aSPEHAR, C. R.  aProspects for sustainable grain production systems in the cerrados (Brazilian savannas).  c1996  ap.139-151.  aBrazil  aenvironmental impact  agrain crops  atillage  aCerrado  aGrão  aImpacto Ambiental  aAgricultura sustentada  aBIBJICACPAC  aBrasil  aSustainability  tIn: SIMPOSIO SOBRE O CERRADO, 8.; INTERNATIONAL SYMPOSIUM ON TROPICAL SAVANNAS, 1., 1996, Brasilia, DF. Biodiversidade e producao sustentavel de alimentos e fibras nos Cerrados: anais... Planaltina: EMBRAPA-CPAC, 1996.