Title: Sekretnai︠a︡ missii︠a︡ v Cherkesii︠u︡ russkogo razvedchika barona F.F. Tornau
Subjects: Circassians, Ethnic identity, Relations, Sources, History, Military History
Places: Caucasus, Russia
People: Fedor Fedorovich Tornau (1810-1890)
Time periods: 19th century, 1801-1917, Nicholas I, 1825-1855