Columbia subject headings:
Daggers, Prehistoric--Duero River Watershed (Spain and Portugal)
Daggers, Prehistoric--Spain.
Duero River Watershed (Spain and Portugal)--Antiquities.
Iron age--Duero River Watershed (Spain and Portugal)
Iron age--Spain.
Spain--Antiquities.
Harvard subject headings:
Daggers, Prehistoric--Duero River Watershed (Spain and Portugal)
Daggers, Prehistoric--Spain.
Duero River Watershed (Spain and Portugal)--Antiquities.
Iron age--Duero River Watershed (Spain and Portugal)
Iron age--Spain
Spain--Antiquities.
Princeton subject headings:
Daggers, Prehistoric--Duero River Region (Spain and Portugal).
Duero River Region (Spain and Portugal)--Antiquities.
Excavations (Archaeology)--Duero River Region (Spain and Portugal).
Iron age--Duero River Region (Spain and Portugal).