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![](./images/clear.gif) 1.- Chronostratigraphy of soil organic matter in volcanic ash soils in northern Ecuador as influenced by tephra deposition and bioturbation
Copernicus GmbH on behalf of the European Geosciences Union (EGU); Katlenburg-Lindau; DEU; Germany, 2008
European Geosciences Union general assembly 2008
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![](./images/clear.gif) 2.- Selective extraction methods for aluminium, iron and organic carbon from montane volcanic ash soils
Elsevier; Beijing; CHN; China, 2011
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![](./images/clear.gif) 3.- The influence of bioturbation on the vertical distribution of soil organic matter in volcanic ash soils; a case study in northern Ecuador
Wiley-Blackwell on behalf of the British Society of Soil Science, and the National Societies of Soil, 2008
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