00422naa a2200133 a 450000100080000000500110000800800410001910000130006024501180007326000090019170000150020070000180021577300550023318290182010-01-10       1978    bl ---       0--  u    #d1 aCHEN, Y.  aChemical and physical characteristics of humic and fulvic acids extracted from soils of the mediterranean region.  c19781 aSENESI, N.1 aSCHNITZER, M.  tGeoderma, Amsterdamgv. 20, n. 2, p. 87-104, 1978.