Columbia subject headings:
Harvard subject headings:
Aesthetics, Modern--18th century.
Physiognomy--History--18th century.
Semiotics--History--18th century.
Signs and symbols--History--18th century.
Princeton subject headings:
Aesthetics, Modern--18th century.
Physiognomy--History--18th century.
Semiotics--History--18th century.
Signs and symbols--History--18th century.