Columbia subject headings:
Droysen, Johann Gustav, 1808-1884--Criticism and interpretation.
Droysen, Johann Gustav, 1808-1884--Political and social views.
Harvard subject headings:
Droysen, Johann Gustav, 1808-1884.
Liberty
Prussia (Germany)--Politics and government--1815-1870.
State, The
Princeton subject headings:
Droysen, Johann Gustav, 1808-1884--Criticism and interpretation.
Droysen, Johann Gustav, 1808-1884--Political and social views.