Columbia subject headings:
Balkan Peninsula--Relations--Germany.
Drang nach Osten--History.
Europe, Eastern--Relations--Germany.
Germany--Relations--Balkan Peninsula.
Germany--Relations--Europe, Eastern.
Harvard subject headings:
Balkan Peninsula--Politics and government--19th century.
Balkan Peninsula--Politics and government--20th century.
Germans--Balkan Peninsula--History--19th century.
Germans--Balkan Peninsula--History--20th century.
Germany--Politics and government--1789-1900
Germany--Politics and government--20th century
Princeton subject headings:
Balkan Peninsula--Relations--Germany.
Drang nach Osten--History.
Europe, Eastern--Relations--Germany.
Germany--Relations--Balkan Peninsula.
Germany--Relations--Europe, Eastern.