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found: Web. 3(humification: the process of the formation of humus)
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found: Buol, S.W. Soil genesis and class., c1989:index (humification (for soil composition) and for soil formation)
found: Gloss. of soil sci. terms, 1987(humification)
found: CAB thes.(humification)
found: Biol. & agr. index(humification, see humus)
found: LC data base, 12/6/93(humification)
