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Leonid Kosmatov
13 Jan, 1901 en Verkhniy Lomov, Nizhniy Lomov uyezd, Penza Governorate, Russian Empire [now Nizhnelomovsky District, Penza Oblast, Russia]
También conocido como:
L. KosmatovЛ. КосматовЛеонид Васильевич Косматов