 |
| surface soil: 47 phrases in 18 subjects |
| Agriculture | 4 |
| Agrochemistry | 2 |
| Construction | 5 |
| Ecology | 3 |
| Environment | 1 |
| General | 6 |
| Geophysics | 1 |
| Hydrology | 2 |
| Makarov | 1 |
| Mining | 3 |
| Natural resourses and wildlife conservation | 4 |
| Nuclear physics | 4 |
| Road works | 4 |
| Sakhalin | 1 |
| Soil science | 2 |
| Tools | 1 |
| Transport | 2 |
| Water resources | 1 |