Columbia subject headings:
Italy, Northern--Antiquities--Congresses.
Stone implements--Italy, Northern--Congresses.
Stone implements--Switzerland--Congresses.
Switzerland--Antiquities--Congresses.
Harvard subject headings:
Italy, Northern--Antiquities--Congresses.
Stone pots
Stone--Italy, Northern--Congresses.
Stone--Switzerland--Congresses.
Switzerland--Antiquities--Congresses.
Princeton subject headings: