Columbia subject headings:
Copperplates--Exhibitions.
Engraving, Italian--Exhibitions.
Istituto nazionale per la grafica (Italy)--Exhibitions.
Harvard subject headings:
Copperplates--Exhibitions.
Engraving, Italian--Exhibitions.
Istituto nazionale per la grafica (Italy)--Exhibitions.
Princeton subject headings:
Copperplates--Exhibitions.
Engraving, Italian--Exhibitions.
Istituto nazionale per la grafica (Italy)--Exhibitions.