Columbia subject headings:
Harvard subject headings:
Azores--Commerce--History.
Azores--Economic conditions--16th century.
Azores--Economic conditions--17th century.
Azores--Social conditions--16th century.
Azores--Social conditions--17th century.
Princeton subject headings:
Azores--Economic conditions--16th century.
Azores--Economic conditions--17th century.
Azores--Social conditions--16th century.
Azores--Social conditions--17th century.