Columbia subject headings:
Humboldt, Wilhelm von, 1767-1835.
Humboldt, Wilhelm von, 1767-1835. Ideen zu einem Versuch, die Granzen der Wirksamkeit des Staats zu bestimmen.
Political science.
Harvard subject headings:
Humboldt, Wilhelm von, 1767-1835.
Liberty.
Political science.
State, The.
Princeton subject headings:
Humboldt, Wilhelm von, 1767-1835.
Liberty.
Political science.
State, The.