Columbia subject headings:
Balkan Peninsula--History--19th century.
Eastern question (Balkan)
Europe--Politics and government--1848-1871.
Europe--Politics and government--1871-1918.
Harvard subject headings:
Balkan Peninsula--History--19th century.
Eastern question (Balkan)
Princeton subject headings:
Balkan Peninsula--History--19th century.
Eastern question (Balkan)
Europe--Politics and government--1848-1871.
Europe--Politics and government--1871-1918.