Columbia subject headings:
Harvard subject headings:
F.A. Brockhaus Wiesbaden (Firm)
Lassalle, Ferdinand, 1825-1864--Correspondence.
Princeton subject headings:
Authors and publishers--Germany--History--19th century.
Brockhaus, Heinrich Eduard, 1829-1914--Correspondence.
F.A. Brockhaus (Firm)
Lassalle, Ferdinand, 1825-1864--Correspondence.
Lassalle, Ferdinand, 1825-1864. System der erworbenen Rechte.