Columbia subject headings:
Harvard subject headings:
Book industries and trade--Germany (West)--History--20th century.
Booksellers and bookselling--Germany (West)--History--20th century.
Radicalism--Germany (West)--History--20th century.
Verband des Linken Buchhandels--History.
Princeton subject headings:
Book industries and trade--Germany (West)--History--20th century.
Booksellers and bookselling--Germany (West)--History--20th century.
Radicalism--Germany (West)--History--20th century.
Verband des Linken Buchhandels--History.