Columbia subject headings:
Harvard subject headings:
Mesolithic period--Portugal.
Mesolithic period--Spain.
Portugal--Antiquities.
Spain--Antiquities.
Stone implements--Portugal.
Stone implements--Spain.
Tools, Prehistoric--Portugal.
Tools, Prehistoric--Spain.
Princeton subject headings:
Mesolithic period--Portugal.
Mesolithic period--Spain, Northern.
Portugal--Antiquities.
Spain, Northern--Antiquities.
Stone implements--Portugal.
Stone implements--Spain, Northern.
Subsistence economy--Portugal.
Subsistence economy--Spain, Northern.