00609naa a2200205 a 450000100080000000500110000800800410001910000200006024501230008026000090020365000120021265000110022465000230023565000090025865300240026770000190029170000190031070000180032977300560034716119601995-06-27       1989    bl uuuu     u00u1 u    #d1 aSAFFIGNA, P. G.  aInfluence of sorghum residues and tillage on soil organic matter and soil microbial biomass in an Australian vertisol.  c1989  aCarbono  aManejo  aMatéria Orgânica  aSolo  aBiomassa microbiana1 aPOWLSON, D. S.1 aBROOKES, P. C.1 aTHOMAS, G. A.  tSoil Biol. Biochem.gv. 21, n. 6, p. 759-765, 1989.