Columbia subject headings:
Bibliography.
Libraries--History.
Printing--History.
Schwenke, Paul, 1853-1921.
Harvard subject headings:
Bibliography--Germany.
Bibliography.
Libraries--History
Printing--History
Schwenke, Paul, 1853-1921.
Princeton subject headings:
Bibliography.
Libraries--History.
Printing--History.
Schwenke, Paul, 1853-