Columbia subject headings:
Germany--Politics and government--1789-1900.
Historians--Germany.
Mommsen, Theodor, 1817-1903.
Niebuhr, Barthold Georg, 1776-1831.
Ranke, Leopold von, 1795-1886.
Sybel, Heinrich von, 1817-1895.
Treitschke, Heinrich von, 1834-1896.
Harvard subject headings:
Germany--Politics and government--1789-1900.
Historians, German.
Mommsen, Theodor, 1817-1903
Niebuhr, Barthold Georg, 1776-1831
Ranke, Leopold von, 1795-1886.
Sybel, Heinrich von, 1817-1895.
Treitschke, Heinrich von, 1834-1896.
Princeton subject headings: