Columbia subject headings:
Europe, Western--Social conditions--18th century.
Europe, Western--Social policy--18th century.
Social institutions--Europe, Western--History--18th century.
Social institutions--Philosophy.
Harvard subject headings:
Europe, Western--Social conditions--18th century.
Europe, Western--Social policy--History--18th century.
Social institutions--Europe, Western--History--18th century.
Social institutions--Philosophy.
Princeton subject headings:
Europe, Western--Social conditions--18th century.
Europe, Western--Social policy--History--18th century.
Social institutions--Europe, Western--History--18th century.
Social institutions--Philosophy.