00683naa a2200241 a 450000100080000000500110000800800410001910000220006024500740008226000090015630000110016550000120017665000110018865000170019965000160021665000250023265000120025765000160026965300110028565300210029670000220031777301020033915458532000-03-14       1999    bl uuuu     u00u1 u    #d1 aECHEVERRIA, R. M.  aCaracterizacao geoquimica das aguas subterraneas do Distrito Federal.  c1999  ap.276.  aResumo.  aBrazil  ageochemistry  agroundwater  aÁguas Subterrâneas  aCerrado  aGeoquímica  aBrasil  aDistrito Federal1 aBOAVENTURA, G. R.  tIn: CONGRESSO DE INICIACAO CIENTIFICA DA UnB, 5., 1999, Anais. Brasilia, DF. Brasilia: UnB, 1999.