Columbia subject headings:
Diplomats--Germany--Biography.
Humboldt, Wilhelm von, 1767-1835.
Philosophers--Germany--Biography.
Harvard subject headings:
Diplomats--Germany--Biography
Humboldt, Wilhelm von, 1767-1835.
Linguists--Germany--Biography.
Philosophers--Germany--Biography
Prussia (Germany)--History--1740-1815.
Princeton subject headings:
Diplomats--Germany--Biography.
Humboldt, Wilhelm von, 1767-1835.
Linguists--Germany--Biography.
Philosophers--Germany--Biography.