Columbia subject headings:
Art and science--Congresses.
Art, Italian--Technique--Congresses.
Artists' studios--Italy--Congresses.
Drawing--Technique--Congresses.
Leonardo, da Vinci, 1452-1519--Congresses.
Painting--Technique--Congresses.
Harvard subject headings:
Art and science--Congresses
Art, Italian--Technique--Congresses.
Artists' studios--Italy--Congresses.
Drawing--Technique--Congresses.
Leonardo, da Vinci, 1452-1519--Congresses.
Painting--Technique--Congresses.
Princeton subject headings:
Art and science--Congresses.
Art, Italian--Technique--Congresses.
Artists' studios--Italy--Congresses.
Drawing--Technique--Congresses.
Leonardo, da Vinci, 1452-1519--Art--Congresses.
Painting--Technique--Congresses.