Columbia subject headings:
Harvard subject headings:
Germany--Politics and government--20th century
Germany--Politics and government--21st century.
Political parties--Germany
Sozialdemokratische Partei Deutschlands
Princeton subject headings:
Germany--Politics and government--20th century.
Germany--Politics and government--21st century.
Maurer, Ulrich, 1948-
Political parties--Germany.
Sozialdemokratische Partei Deutschlands.