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noun | adjective | to phrases
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| руддан (MichaelBurov); рудданский ярус (MichaelBurov); рудданский век (MichaelBurov); рудданский возраст (MichaelBurov) | |||
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| рудданский (MichaelBurov) | |||
| English thesaurus | |||
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| Rhu (MichaelBurov) | |||
| Rhuddanian: 14 phrases in 3 subjects |
| Geochronology | 5 |
| Geology | 5 |
| Stratigraphy | 4 |