 |
| river bed: 82 phrases in 23 subjects |
| Agriculture | 2 |
| Agrochemistry | 2 |
| Bridge construction | 1 |
| Construction | 5 |
| Ecology | 4 |
| Electronics | 6 |
| Engineering geology | 1 |
| Forestry | 1 |
| General | 12 |
| Geography | 3 |
| Geology | 3 |
| Hydraulic engineering | 2 |
| Hydrology | 15 |
| Makarov | 9 |
| Mathematics | 1 |
| Military | 1 |
| Mining | 2 |
| Oil and gas | 1 |
| Rail transport | 1 |
| Road works | 1 |
| Seismology | 1 |
| Technology | 5 |
| Water resources | 3 |