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Alexander Stepanovich Popov
Русский: Почтовая марка России
English: 150th Anniversary of the Birth of Alexander Stepanovich Popov (1859-1906), physicist, electrical engineer & inventor of radio
Russian Stamps
Alexander Stepanovich Popov
Русский: Почтовая марка России
English: 150th Anniversary of the Birth of Alexander Stepanovich Popov (1859-1906), physicist, electrical engineer & inventor of radio