 |
|
geological exploration : 81 phrases in 16 subjects |
| Astronomy | 1 |
| Cartography | 1 |
| Caspian | 1 |
| General | 11 |
| Geology | 5 |
| Geophysics | 1 |
| Gold mining | 3 |
| Mining | 3 |
| Oil / petroleum | 4 |
| Oil and gas | 4 |
| Oilfields | 1 |
| Production | 1 |
| Sakhalin | 3 |
| Sakhalin R | 1 |
| Soviet | 39 |
| University | 2 |