Columbia subject headings:
Copper age--Duero River Region (Spain and Portugal)
Duero River (Spain and Portugal)--Antiquities.
Excavations (Archaeology)--Duero River Valley (Spain and Portugal)
Harvard subject headings:
Copper age--Duero River Valley (Spain and Portugal)
Copper age--Spain.
Duero River Valley (Spain and Portugal)--Antiquities.
Excavations (Archaeology)--Duero River Valley (Spain and Portugal)
Excavations (Archaeology)--Spain
Landscape archaeology--Duero River Valley (Spain and Portugal)
Landscape archaeology--Spain.
Spain--Antiquities.
Princeton subject headings: