Columbia subject headings:
Harvard subject headings:
Chemistry--Germany--Berlin--History--19th century--Exhibitions.
Chemists--Germany--Berlin--Exhibitions.
Hofmann, August Wilhelm von, 1818-1892--Exhibitions.
Princeton subject headings:
Chemistry--Germany--Berlin--History--19th century--Exhibitions.
Chemists--Germany--Berlin--Exhibitions.
Hofmann, August Wilhelm von, 1818-1892--Exhibitions.