Columbia subject headings:
Harvard subject headings:
Cartography--Political aspects--History--20th century.
Cold War
Geopolitics--History--20th century.
Germany--Historical geography.
Germany--Politics and government
Political geography--History--20th century.
World politics--20th century
Princeton subject headings:
Cartography--Political aspects--History--20th century.
Cold War.
Geopolitics--History--20th century.
Germany--Historical geography.
Germany--Politics and government.
Political geography--History--20th century.
World politics--20th century.