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![](./images/clear.gif) 1.- CHARACTERISTICS OF SOIL ORGANIC MATTER OF DIFFERENT BRAZILIAN FERRALSOLS UNDER NATIVE VEGETATION AS A FUNCTION OF SOIL DEPTH
ELSEVIER; AMSTERDAM; NLD; NETHERLANDS, 2005
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![](./images/clear.gif) 2.- MULTIMETHOD STUDY OF THE DEGREE OF HUMIFICATION OF HUMIC SUBSTANCES EXTRACTED FROM DIFFERENT TROPICAL SOIL PROFILES IN BRAZIL'S AMAZONIAN REGION
ELSEVIER; AMSTERDAM; NLD; NETHERLANDS, 2005
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