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Subject
- Soil physics53
- Physical geography48
- Agriculture33
- Soils22
- Soil moisture13
- Agricultural physics12
- Forests and forestry12
- Life sciences11
- Soil science11
- Environmental aspects9
- Land use7
- Surfaces (Physics)7
- Analysis6
- Soil physical chemistry6
- Physical education and training5
- Soil chemistry5
- Timber physics5
- Wood5
- Agricultural chemicals4
- Crops and soils4