Title: Dli︠a︡ polʹzy Otechestva
Subjects: Geographers, Biography, Geography, History
Places: Russia
People: Petr Semenov-Ti͡anʹ-Shanskiĭ (1827-1914), Petr Semenov-Ti︠a︡nʹ-Shanskiĭ (1827-1914)