00669nam a2200181 a 450000100080000000500110000800800410001910000190006024501160007926001650019565000120036065000140037265300250038670000220041170000210043370000130045470000200046718759042011-02-07       2010    bl uuuu     u00u1 u    #d1 aNOVOTNY, E. H.  aSelective extraction of the characteristic humic fraction from Terras Pretas de Índios.h[electronic resource]  aIn: INTERNATIONAL BIOCHAR CONFERENCE, 3., 2010, Rio de Janeiro. Progressing from Terra Preta de Índios to the whole world: anais. Rio de Janeiro: Embrapac2010  abiochar  apyrolysis  a13 C Solid state NMR1 aVELLOSO, M. H. R.1 aBONAGAMBA, T. J.1 aSONG, G.1 aHAYES, M. H. B.