Columbia subject headings:
Revolutionaries--Balkan Peninsula--History--19th century.
Russians--Balkan Peninsula--History--19th century.
Harvard subject headings:
Revolutionaries--Balkan Peninsula--History--19th century.
Russians--Balkan Peninsula--History--19th century.
Princeton subject headings:
Revolutionaries--Balkan Peninsula.
Russia--History--Alexander III, 1881-1894.
Russia--History--Nicholas II, 1894-1917.
Russians--Balkan Peninsula--Political activity.