Columbia subject headings:
Harvard subject headings:
Constitutional amendments--Switzerland--History--Sources.
Constitutional history--Switzerland--Sources.
Democracy--Switzerland.
Direct democracy--Switzerland--History--Sources.
Direct democracy--Switzerland--History.
Federal government--Switzerland--Citizen participation--History.
Switzerland--Politics and government--19th century.
Switzerland--Politics and government--Sources.
Princeton subject headings:
Democracy--Switzerland.
Switzerland--Politics and government--19th century.