Columbia subject headings:
Catalonia (Spain)--Kings and rulers--Biography.
Catalonia (Spain)--Politics and government.
Pedro, Constable of Portugal, 1429-1466.
Spain--Politics and government--To 1479.
Harvard subject headings:
Catalonia (Spain)--Kings and rulers--Biography.
Catalonia (Spain)--Politics and government.
Pedro, Constable of Portugal, 1429-1466
Spain--Politics and government--To 1479.
Princeton subject headings: