Columbia subject headings:
Harvard subject headings:
Labour Party (Great Britain)--History--20th century.
Parti socialiste-S.F.I.O.--History--20th century.
Socialist parties--Europe--History--20th century.
Sozialdemokratische Partei Deutschlands--History--20th century.
Princeton subject headings:
Labour Party (Great Britain)--History--20th century.
Parti socialiste-S.F.I.O.--History--20th century.
Socialist parties--Europe--History--20th century.
Sozialdemokratische Partei Deutschlands--History--20th century.