Columbia subject headings:
Books--History--1450-1600.
First editions.
Incunabula--Bibliography.
Printing--History--Origin and antecedents.
Harvard subject headings:
Books--History--1450-1600
First editions
Incunabula--Bibliography
Printing--History--Origin and antecedents
Princeton subject headings:
Books--History--1450-1600.
First editions.
Incunabula--Bibliography.
Printing--History--Origin and antecedents.