Columbia subject headings:
History--Philosophy--History--18th century.
Philosophy, French--18th century.
Philosophy, German--18th century.
Harvard subject headings:
Historiography--France--History--18th century.
History--Philosophy--History--18th century.
Philosophy, French--18th century.
Princeton subject headings:
Historiography--France--History--18th century.
History--Philosophy--History--18th century.
Philosophy, French--18th century.