Columbia subject headings:
Harvard subject headings:
Booksellers and bookselling--Germany--History--20th century.
Gustav Kiepenheuer Verlag--History--20th century.
Kiepenheuer & Witsch--History--20th century.
Publishers and publishing--Germany--History--20th century
Princeton subject headings:
Booksellers and bookselling--Germany--History.
Gustav Kiepenheuer Verlag.
Kiepenheuer & Witsch.
Publishers and publishing--Germany--History.