information about 1938 USDA soil taxonomy field
Field Hierarchy
Parent | |||
---|---|---|---|
Soil morphology 2,763 papers | Soil series 2,597 papers | Digital soil mapping 2,346 papers | USDA soil taxonomy 1,647 papers |
Regosol 568 papers | |||
Current | |||
1938 USDA soil taxonomy papers | |||
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History