Columbia subject headings:
Harvard subject headings:
Artists' preparatory studies--Italy--Pisa--Exhibitions.
Duomo (Pisa, Italy)--Exhibitions.
Painting, Italian--Italy--Pisa--Exhibitions.
Painting, Modern--17th-18th centuries--Italy--Pisa--Exhibitions.
Pictures--Copying--Exhibitions.
Princeton subject headings:
Duomo (Pisa, Italy)--Exhibitions.
Painting, Italian--Italy--Pisa--Exhibitions.
Painting--Italy--Pisa--Exhibitions.
Pictures--Copying.