Columbia subject headings:
Castile (Spain)--Population--History--16th century.
Spain--Population--History--16th century.
Harvard subject headings:
Castile (Spain)--History.
Castile (Spain)--Population--History--16th century.
Castile (Spain)--Population.
Spain--Population--History--16th century.
Princeton subject headings:
Castile (Spain)--History.
Castile (Spain)--Population--History.