Columbia subject headings:
Harvard subject headings:
Handwerker, Otto, 1877-1947.
Historians--Germany--Würzburg--Biography.
Librarians--Germany--Würzburg--Biography.
Library science--Germany--History--20th century.
Princeton subject headings:
Handwerker, Otto, 1877-1947.
Historians--Germany (West)--Würzburg--Biography.
Librarians--Germany (West)--Würzburg--Biography.
Library science--Germany--History--20th century.