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Cambios en los contenidos nutricionales en los suelos arenosos de sabanas del amazonas bajo fertilización orgánica prolongada ; Changes in the nutrient content in amazonian savanna...
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Changes in soil carbon stocks from 1960 to 2000 in the main Belgian cropland areas
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Soil carbon sequestration in the Netherlands: inventory of long term experiments to validate effectiveness of soil carbon management in agriculture and land use change