00600naa a2200181 a 450000100080000000500110000800800410001910000220006024501370008226000090021965000150022865000150024365300190025865300150027765300200029265300240031277300820033613094132011-07-25       2001    bl uuuu     u00u1 u    #d1 aMAIA, C. M. B. F.  aSpectroscopic characterization of organic structures and organic-inorganic interactions in paper mill sludge.h[electronic resource]  c2001  aextraction  aExtração  aÁcido húmico  aHumic acid  aHumic substance  aSubstância húmica  tActa Hydrochimica et Hydrobiologica, Weinheimgv. 28, n. 7, p. 372-377, 2001.