Columbia subject headings:
Art, Italian--Congresses.
Art--Italy--Matelica--Congresses.
Museo Piersanti--Congresses.
Harvard subject headings:
Art, Italian--Congresses.
Art--Italy--Matelica--Congresses.
Museo Piersanti--Congresses.
Princeton subject headings:
Art, Italian--Congresses.
Art--Italy--Matelica--Congresses.
Museo Piersanti--Congresses.