Columbia subject headings:
Catalonia (Spain)--Politics and government--20th century.
Middle class--Political activity--Spain--Catalonia.
Spain--Politics and government--1931-1939.
Harvard subject headings:
Catalonia (Spain)--Politics and government--20th century.
Middle class--Spain--Catalonia--Political activity.
Spain--Politics and government--1931-1939.
Princeton subject headings:
Catalonia (Spain)--Politics and government--20th century.
Middle class--Spain--Catalonia--Political activity.
Spain--Politics and government--1931-1939.