Columbia subject headings:
Germany--Civilization--20th century.
Germany--Civilization--21st century.
Germany--Politics and government--20th century.
Germany--Politics and government--21st century.
Harvard subject headings:
Germany--Civilization--20th century.
Germany--Civilization--21st century.
Germany--Politics and government--20th century
Germany--Politics and government--21st century.
Princeton subject headings:
Germany--Civilization--20th century.
Germany--Civilization--21st century.
Germany--Politics and government--20th century.
Germany--Politics and government--21st century.