information about Unified Soil Classification System field
Field Hierarchy
| Parent | |||
|---|---|---|---|
Biology 35.7M papers | Geology 9.4M papers | Environmental science 8.1M papers | Ecology 8M papers |
Soil science 787k papers | Soil water 767k papers | Soil classification 9,132 papers | |
| Current | |||
Unified Soil Classification System 490 papers | |||
| Child | |||
Trends