Columbia subject headings:
Books--Italy--Rome--History--Congresses.
Libraries--Italy--Rome--History--Congresses.
Printing--Italy--Rome--History.
Harvard subject headings:
Books--Italy--Rome--History--1400-1600--Congresses.
Books--Italy--Rome--History--1450-1600--Congresses.
Incunabula--Italy--Rome--Bibliography--Congresses.
Libraries--Italy--Rome--History--1400-1600--Congresses.
Manuscripts, Latin (Medieval and modern)--Italy--Rome--Congresses.
Manuscripts, Renaissance--Italy--Rome--Congresses.
Paleography, Italian--Italy--Rome--Congresses.
Printing--Italy--Rome--History--Origin and antecedents--Congresses.
Rome (Italy)--Civilization--15th century--Congresses.
Rome (Italy)--Imprints--Congresses.
Scriptoria--Italy--Rome--Congresses.
Princeton subject headings:
Books--Italy--Rome--History--Congresses.
Libraries--Italy--Rome--History--Congresses.
Printing--Italy--Rome--History.