Unified Soil Classification System

https://www.wikidata.org/wiki/Q905795

Field Hierarchy

Parent
Biology 36.7M papers	Geology 10.6M papers	Environmental science 9M papers	Ecology 8.3M papers
Soil science 822k papers	Soil water 799k papers	Soil classification 9,526 papers
Current
Unified Soil Classification System 492 papers
Child

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History