00612naa a2200181 a 450000100080000000500110000800800410001910000240006024501120008426000090019665000190020565300330022470000270025770000200028470000170030470000190032177300900034020779982018-04-11       2017    bl uuuu     u00u1 u    #d1 aGUARDIOLA, M. D. E.  aChemical and physical fractions of soil organic matter under various management regimes in Roraima, Brazil.  c2017  asoil fertility  aOrganic Carbon Fractionation1 aVALE JÚNIOR, J. F. do1 aSILVA, E. E. da1 aROSSI, C. Q.1 aPEREIRA, M. G.  tSemina: Ciências Agrárias, Londrinagv. 38, n. 4, suplemento 1, p. 2419-2432, 2017.