Columbia subject headings:
Basel (Switzerland)--History.
Basel (Switzerland)--Politics and government.
Depressions--1929--Switzerland--Basel.
Sozialdemokratische Partei der Schweiz.
Harvard subject headings:
Basel-Stadt (Switzerland)--Politics and government.
Princeton subject headings:
Basel (Switzerland)--History.
Basel (Switzerland)--Politics and government.
Depressions--1929--Switzerland--Basel.
Kommunistische Partei der Schweiz.
Sozialdemokratische Partei der Schweiz.