Columbia subject headings:
Painting, Italian--Catalogs.
Painting, Medieval--Italy--Catalogs.
Painting--Italy--Siena--Catalogs.
Pinacoteca nazionale di Siena--Catalogs.
Harvard subject headings:
Painting, Italian--Catalogs
Painting, Medieval--Italy--Catalogs.
Painting--Italy--Siena--Catalogs.
Pinacoteca nazionale di Siena--Catalogs.
Princeton subject headings:
Catalogs.
Painting, Italian--Catalogs.
Painting, Medieval--Italy--Catalogs.
Painting--Italy--Siena--Catalogs.
Pinacoteca nazionale di Siena--Catalogs.