 |
| вулканическая порода: 50 phrases in 21 subjects |
| Astronomy | 1 |
| Caspian | 1 |
| Cement | 4 |
| Construction | 1 |
| Drilling | 1 |
| Electronics | 2 |
| General | 1 |
| Geography | 1 |
| Geology | 15 |
| Gold mining | 4 |
| Makarov | 5 |
| Mining | 1 |
| Nautical | 4 |
| Navigation | 2 |
| Oil / petroleum | 1 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
| Road works | 1 |
| Seismology | 1 |
| United Nations | 1 |