Columbia subject headings:
Harvard subject headings:
Cables, Submarine--Portugal--Carcavelos--History.
Carcavelos (Portugal)--Civilization--Foreign influences.
English--Portugal--Carcavelos--History.
Princeton subject headings:
Cables, Submarine--Portugal--Carcavelos--History.
Carcavelos (Portugal)--Civilization--Foreign influences.
English--Portugal--Carcavelos--History.