Columbia subject headings:
Puerto Real (Spain)--History--17th century.
Slavery--Spain--Puerto Real--History--17th century.
Harvard subject headings:
Puerto Real (Spain)--History--17th century.
Slavery--Spain--Puerto Real--History--17th century.
Princeton subject headings:
Puerto Real (Spain)--History--17th century.
Slavery--Spain--Puerto Real--History--17th century.