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Matrosovka (Матросовка, Sommeenjoki, Sommenjoki , Reka Sommen-Yoki), Russia
latitude: 60.650002
longitude: 28.716667
Precision of location: Alexandria Digital Library (with NGA GNDB data)
Site Named Here: By name of island, bay, strait, lake, river, or stream, etc., named in source publication
| Polycelis tenuis | 1961 or earlier | Ka. [map reference area, p. 42] ; Ala Sommeenjoki (A. J. S. ) |