Columbia subject headings:
Art, Italian--Italy--Tiber River Valley--Exhibitions.
Tiber River Valley (Italy)--Description and travel--Exhibitions.
Harvard subject headings:
Art museums--Italy--Tiber River Valley--Guidebooks.
Art, Italian--Italy--Tiber River Valley--Guidebooks.
Tiber River Valley (Italy)--Guidebooks.
Princeton subject headings:
Art, Italian--Italy--Tiber River Valley--Exhibitions.
Tiber River Valley (Italy)--Description and travel--Exhibitions.