Columbia subject headings:
Harvard subject headings:
Catalonia (Spain)--Economic conditions.
Catalonia (Spain)--History.
Catalonia (Spain)--Social conditions.
Feudalism--Spain--Catalonia.
Princeton subject headings:
Catalonia (Spain)--Economic conditions.
Catalonia (Spain)--History.
Catalonia (Spain)--Social conditions.
Feudalism--Spain--Catalonia.