Columbia subject headings:
Harvard subject headings:
Agriculture and state--Germany--Prussia--History--18th century.
Prussia (Germany)--History--Frederick II, 1740-1786.
Prussia (Germany)--Politics and government--1740-1786.
Social classes--Germany--Prussia--History--18th century.
Princeton subject headings:
Agriculture and state--Germany--Prussia--History--18th century.
Prussia (Germany)--History--Frederick II, 1740-1786.
Prussia (Germany)--Politics and government--1740-1786.
Social classes--Germany--Prussia--History--18th century.