Columbia subject headings:
Gutenberg, Johann, 1397?-1468.
Printers--Germany--Biography.
Printing--History.
Harvard subject headings:
Gutenberg, Johann, 1397?-1468.
Printers--Germany--Biography
Printing--History--Origin and antecedents
Princeton subject headings:
Gutenberg, Johann, 1397?-1468.
Printers--Germany--Biography.
Printing--History.