Columbia subject headings:
Harvard subject headings:
Classicists--Germany--Bibliography.
Classicists--Germany--Biography.
Greece--Historiography.
Hellenism.
Princeton subject headings:
Droysen, Johann Gustav, 1808-1884.
Historians--Germany--19th century--Biography.
Historiography.
Politicians--Germany--19th century--Biography.
Prussia (Germany)--History--19th century.