Columbia subject headings:
Harvard subject headings:
Germany--History--1990-
Germany--History--20th century.
Germany--History--Philosophy.
Germany--Politics and government--1789-1900
Germany--Politics and government--20th century
Princeton subject headings:
Germany--History--20th century.
Germany--History--Philosophy.
Germany--Politics and government--1789-1900.
Germany--Politics and government--20th century.
Germany--Social conditions--20th century.