Columbia subject headings:
Language and languages--Philosophy--History--18th century.
Logic, Modern--18th century.
Philosophy, Modern--18th century.
Harvard subject headings:
Language and languages--Philosophy--History--18th century
Logic, Modern--18th century.
Philosophy, Modern--18th century.
Princeton subject headings:
Language and languages--Philosophy--History--18th century.
Logic--History--18th century.
Philosophy, Modern--18th century.