Columbia subject headings:
Harvard subject headings:
Germany--Foreign relations--20th century.
Germany--Foreign relations--21st century.
Germany--Politics and government--1871-
Nationalism--Germany
World politics--20th century
World politics--21st century
Princeton subject headings:
Germany--Foreign relations--20th century.
Germany--Foreign relations--21st century.
Germany--Politics and government--1871-
Nationalism--Germany.
World politics--20th century.
World politics--21st century.