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Ordovician (система) | |||
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Ord (MichaelBurov); Ordovician (MichaelBurov) | |||
Ord (MichaelBurov); Ordovician (страт. MichaelBurov) |
Ордовикская : 40 phrases in 7 subjects |
Drilling | 1 |
Geochronology | 14 |
Geology | 13 |
Makarov | 2 |
Oil and gas | 1 |
Paleontology | 1 |
Stratigraphy | 8 |