Columbia subject headings:
Iron age--Isonzo River Valley (Slovenia and Italy)--Congresses.
Iron age--Natisone River Valley (Italy and Slovenia)--Congresses.
Isonzo River Valley (Slovenia and Italy)--Antiquities--Congresses.
Natisone River Valley (Italy and Slovenia)--Antiquities--Congresses.
Harvard subject headings:
Iron age--Isonzo River Valley (Slovenia and Italy)--Congresses.
Iron age--Natisone River Valley (Italy and Slovenia)--Congresses.
Isonzo River Valley (Slovenia and Italy)--Antiquities--Congresses.
Natisone River Valley (Italy and Slovenia)--Antiquities--Congresses.
Princeton subject headings:
Isonzo River Valley (Slovenia and Italy)--Antiquities--Congresses.
Natisone River Valley (Italy and Slovenia)--Antiquities--Congresses.