Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--History--19th century
Balkan Peninsula--History--20th century
Civil rights--Balkan Peninsula--History--19th century.
Civil rights--Balkan Peninsula--History--20th century.
Princeton subject headings:
Balkan Peninsula--History--19th century.
Balkan Peninsula--History--20th century.
Civil rights--Balkan Peninsula--History--19th century.
Civil rights--Balkan Peninsula--History--20th century.