information about 1938 USDA soil taxonomy field
Field Hierarchy
| Parent | |||
|---|---|---|---|
Soil morphology 2,800 papers | Soil series 2,621 papers | Digital soil mapping 2,406 papers | USDA soil taxonomy 1,658 papers |
Regosol 576 papers | |||
| Current | |||
1938 USDA soil taxonomy papers | |||
| Child | |||
Trends
Notes
History