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докембрийский
| период
| докембрийский | |
| dril. | Eozoic |
| geol. | Pre-Cambrian; Archaean; Archean; pre-Cambrian; Precambrian |
| период | |
| gen. | period; age; run; distance |
| |||
| Eozoic | |||
| Pre-Cambrian; Archaean; Archean; pre-Cambrian (MichaelBurov); Precambrian (редк. MichaelBurov) | |||
| Precambrian | |||
| докембрийский: 45 phrases in 6 subjects |
| Evolution | 2 |
| Geochronology | 35 |
| Geology | 4 |
| Geophysics | 1 |
| Mining | 1 |
| Oilfields | 2 |