Columbia subject headings:
Biblioteca apostolica vaticana--Exhibitions.
Early printed books--Vatican City--Exhibitions.
Manuscripts--Vatican City--Exhibitions.
Rare books--Vatican City--Exhibitions.
Harvard subject headings:
Biblioteca apostolica vaticana.--Exhibitions.
Catholic libraries--Vatican City.
Early printed books--Vatican City--Exhibitions.
Manuscripts--Vatican City--Exhibitions.
Rare books--Vatican City--Exhibitions.
Princeton subject headings: