Columbia subject headings:
Eastern question (Balkan)
Eastern question (Balkan)--History.
Nationalism--Balkan Peninsula--History.
Nationalism--Balkan Peninsula.
Harvard subject headings:
Eastern question (Balkan)
Eastern question (Balkan)--History.
Nationalism--Balkan Peninsula
Nationalism--Balkan Peninsula--History.
Princeton subject headings:
Eastern question (Balkan)
Nationalism--Balkan Peninsula--History.