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AgricultureEarth SciencesSoil SciencesSoil BiogeochemistrySoil ClassificationSoil ScienceGlobal Soil DistributionLand Cover ClassificationSoil CompositionSoil TaxonomySoil-landform RelationshipsSoil-landscape RelationshipsGlobal Resource DistributionLand Cover AnalysisLand Cover DiversityLand Cover TypologyLandscape Soil VariabilityRegional Soil PatternsSoil-landform Classification