 |
| |||
| geological survey (Lavrov) | |||
| exploration (Leonid Dzhepko); geology study (Bauirjan) | |||
| геологическое изучение: 35 phrases in 12 subjects |
| Astronautics | 1 |
| Business | 1 |
| Economy | 1 |
| General | 8 |
| Gold mining | 2 |
| Law | 2 |
| Medical | 1 |
| Mining | 8 |
| Oil and gas | 7 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
| Sakhalin | 2 |