Columbia subject headings:
Bell beaker culture--Portugal.
Bell beaker culture--Spain.
Portugal--Antiquities.
Spain--Antiquities.
Harvard subject headings:
Beaker cultures--Portugal.
Beaker cultures--Spain.
Portugal--Antiquities.
Spain--Antiquities.
Princeton subject headings:
Bell beaker culture--Portugal.
Bell beaker culture--Spain.
Portugal--Antiquities.
Spain--Antiquities.