Columbia subject headings:
Pompeii (Extinct city)--Congresses.
Harvard subject headings:
Geology--Italy--Pompeii (Extinct city)--Congresses.
Pompeii (Extinct city)--Congresses.
Princeton subject headings:
Pompeii (Extinct city)--Congresses.
Sarno River Valley (Italy)--Antiquities--Congresses.
Sorrento Peninsula (Italy)--Antiquities--Congresses.