Columbia subject headings:
Basilica di San Pietro in Vaticano.
Mosaics, Italian--Vatican City.
Studio del mosaico (Vatican City)
Harvard subject headings:
Basilica di San Pietro in Vaticano.
Mosaics, Italian--Vatican City.
Studio del mosaico (Vatican City)
Princeton subject headings:
Basilica di San Pietro in Vaticano.
Mosaics, Italian--Vatican City.
Studio del mosaico (Vatican City)