Columbia subject headings:
Biblioteca apostolica vaticana--Archives--Catalogs.
Biblioteca apostolica vaticana--History--Sources.
Library circulation and loans--Vatican City--History--Sources.
Harvard subject headings:
Biblioteca apostolica vaticana--History--Sources.
Biblioteca apostolica vaticana--History.
Libraries--Italy--Rome--History--1400-1600.
Libraries--Italy--Rome--History--17th century.
Library circulation and loans--Vatican City--History--Sources.
Princeton subject headings:
Biblioteca apostolica vaticana--Archives.
Biblioteca apostolica vaticana--History--Sources.
Church libraries--Vatican City--History--Sources.
Libraries--Vatican City--Circulation, loans--History--Sources.
Theological libraries--Vatican City--History--Sources.