Sergey Sergeyevich Smirnov (geologist)
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Sergei Sergeevich Smirnov (Смирнов, Сергей Сергеевич in Russian) (9.4(16).1895 — 8.20.1947) was a Russian geologist and mineralogist, academician of the Soviet Academy of Sciences (1943).
The ridge Dorsa Smirnov on the Moon was named after him.