Columbia subject headings:
Geology--Italy--Pompeii (Extinct city)--Congresses.
Geology--Italy--Sorrento Peninsula--Congresses.
Pompeii (Extinct city)--Congresses.
Sorrento Peninsula (Italy)--Antiquities--Congresses.
Vesuvius (Italy)--Antiquities--Congresses.
Harvard subject headings:
Campania (Italy)--Antiquities--Congresses.
Pompeii (Extinct city)--Congresses.
Sorrento Region (Italy)--Antiquities--Congresses.
Vesuvius Region (Italy)--Congresses.
Princeton subject headings:
Geology--Italy--Pompeii (Extinct city)--Congresses.
Geology--Italy--Sorrento Peninsula--Congresses.
Geology--Italy--Vesuvius--Congresses.
Pompeii (Extinct city)--Congresses.
Sorrento Peninsula (Italy)--Antiquities--Congresses.
Vesuvius (Italy)--Antiquities--Congresses.