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| mountain building | |||
| revolution; process of formation of mountains (MichaelBurov); process of mountain formation (MichaelBurov) | |||
| mountain building (= орогенез) | |||
| orogenesis; orogeny; orogeny (горообразование) | |||
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орогения : 16 phrases in 3 subjects |
| Geology | 14 |
| Makarov | 1 |
| Oil and gas | 1 |