Columbia subject headings:
Democracy--Denmark--History.
Denmark--Politics and government.
Denmark--Social policy--History.
Labor movement--Denmark--History.
Public welfare--Denmark--History.
Socialism--Denmark--History.
Welfare state--Denmark--History.
Harvard subject headings:
Denmark--Politics and government--19th century
Denmark--Politics and government--20th century.
Denmark--Politics and government--21st century.
Socialism--Denmark--History.
Princeton subject headings:
Denmark--Politics and government--20th century.
Labor movement--Denmark.
Socialdemokratisk forbund.
Welfare state--Denmark.