Columbia subject headings:
Biblioteca ambrosiana--Exhibitions.
Drawing, Renaissance--Exhibitions.
Drawing--Italy--Milan--Exhibitions.
Harvard subject headings:
Biblioteca ambrosiana--Exhibitions.
Drawing, Renaissance--Exhibitions.
Drawing--Italy--Milan--Exhibitions.
Princeton subject headings:
Biblioteca ambrosiana--Exhibitions.
Drawing, Renaissance--Exhibitions.
Drawing--Italy--Milan--Exhibitions.