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| время регистрации (в журнале) | |||
| logging time: 31 phrases in 12 subjects |
| Computer networks | 2 |
| General | 2 |
| Geophysics | 10 |
| Information technology | 3 |
| Mountaineering | 1 |
| Oil / petroleum | 5 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
| Programming | 2 |
| Surveying | 1 |
| Technology | 2 |