00664naa a2200241 a 450000100080000000500110000800800410001910000190006024500750007926000090015430000100016350000120017365000110018565000150019665000120021165000160022365000090023965300110024865300210025970000180028070000220029877301020032015538401998-02-11       1997    bl uuuu     u00u1 u    #d1 aGRAVINA, E. G.  aRefinamento estrutural de fases minerais de solos do Distrito Federal.  c1997  ap.14.  aResumo.  aBrazil  amineralogy  aCerrado  aMineralogia  aSolo  aBrasil  aDistrito Federal1 aGASPAR, J. C.1 aMARTINS, E. de S.  tIn: CONGRESSO DE INICIACAO CIENTIFICA DA UnB, 3., 1997, Brasilia, DF. Anais. Brasilia: UnB, 1997.