Columbia subject headings:
Art, Italian--Italy--Urbino--15th century--Congresses.
Carnevale, fra, active 15th century--Congresses.
Harvard subject headings:
Art, Italian--Italy--Urbino--15th century--Congresses.
Carnevale, fra, active 15th century--Congresses.
Urbino (Italy)--Civilization--Congresses.
Princeton subject headings: