 |
| |||
| field work | |||
| |||
| field research (Alexey Lebedev) | |||
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экспедиционные исследования : 2 phrases in 2 subjects |
| Nautical | 1 |
| Soviet | 1 |
|
| |||
| field work | |||
| |||
| field research (Alexey Lebedev) | |||
|
экспедиционные исследования : 2 phrases in 2 subjects |
| Nautical | 1 |
| Soviet | 1 |