Columbia subject headings:
Archaeology--Portugal--History--19th century.
Archaeology--Portugal--History--20th century.
Excavations (Archaeology)--Portugal.
Portugal--Antiquities.
Harvard subject headings:
Archaeology--Portugal--History--19th century.
Archaeology--Portugal--History--20th century.
Excavations (Archaeology)--Portugal
Portugal--Antiquities
Princeton subject headings:
Archaeology--Portugal--History--19th century.
Archaeology--Portugal--History--20th century.
Excavations (Archaeology)--Portugal.
Portugal--Antiquities.