Columbia subject headings:
Books--History--1450-1600--Congresses.
Early printed books--Greece--Athens--Bibliography--Congresses.
Greece--Imprints--Congresses.
Incunabula--Greece--Athens--Bibliography--Congresses.
Printing--Greece--History--Origin and antecedents--Congresses.
Printing--History--Origin and antecedents--Congresses.
Harvard subject headings:
Greek imprints--Congresses.
Incunabula--Greece--Athens--Congresses.
Princeton subject headings: