Columbia subject headings:
Harvard subject headings:
Peasants--Germany--History--18th century.
Peasants--Germany--History--19th century.
Serfdom--Germany--History--18th century.
Serfdom--Germany--History--19th century.
Serfs--Emancipation--Germany--History--18th century.
Serfs--Emancipation--Germany--History--19th century.
Princeton subject headings:
Land tenure--Germany--History.
Serfs--Emancipation--Germany.