Columbia subject headings:
Harvard subject headings:
Germany--Imprints.
Incunabula--Germany--Bibliography.
Incunabula.
Printers--Germany--Biography
Printers--Germany.
Printing--Germany--History--Origin and antecedents.
Printing--Germany--History.
Princeton subject headings:
Incunabula.
Printers--Germany.
Printing--Germany--History.