Columbia subject headings:
Art, European--Exhibitions.
Phlegraean Plain (Italy)--Description and travel--Exhibitions.
Phlegraean Plain (Italy)--In art--Exhibitions.
Harvard subject headings:
Art, European--Exhibitions
Phlegraean Plain (Italy)--Description and travel--Exhibitions.
Phlegraean Plain (Italy)--In art--Exhibitions.
Princeton subject headings:
Art, European--Exhibitions.
Phlegraean Plain (Italy)--Description and travel--Exhibitions.
Phlegraean Plain (Italy)--In art--Exhibitions.