Columbia subject headings:
Madrid (Spain)--Politics and government--19th century.
Madrid (Spain)--Politics and government--20th century.
Political participation--Spain--Madrid--History.
Harvard subject headings:
Madrid (Spain)--Politics and government.
Republicanism--Spain--Madrid--History.
Socialism--Spain--Madrid--History.
Princeton subject headings:
Madrid (Spain)--Politics and government.
Republicanism--Spain--Madrid--History.
Socialism--Spain--Madrid--History.