Columbia subject headings:
Harvard subject headings:
Catalan language--Political aspects--History--20th century.
Language policy--Spain--History--20th century--Chronology.
Lliga Regionalista (Catalonia, Spain)--History.
Princeton subject headings:
Catalan language--Political aspects--Spain--Catalonia.
Catalonia (Spain)--History--Autonomy and independence movements.
Lliga Regionalista (Catalonia, Spain)--History--20th century.
Nationalism--Spain--Catalonia--History--20th century.