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![](./images/clear.gif) 1.- Analysis of soil humic acids in particle size fractions of an Alfisol from a Mediterranean-type climate
Elsevier; Amsterdam; NLD; Netherlands, 2009
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![](./images/clear.gif) 2.- Relationship between extractable Al and organic C in volcanic soils of Chile
Elsevier; Amsterdam; NLD; Netherlands, 2008
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![](./images/clear.gif) 3.- Sensitivity of early indicators for evaluating quality changes in soil organic matter
Elsevier; Amsterdam; NLD; Netherlands, 2009
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![](./images/clear.gif) 4.- Subsoiling improves conservation tillage in cereal production of severely degraded Alfisols under Mediterranean climate
Elsevier; Amsterdam; NLD; Netherlands, 2012
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