Columbia subject headings:
Harvard subject headings:
Civil law--Philosophy--History--18th century.
Free-law movement--History--18th century.
Höpfner, Ludwig Julius Friedrich, 1743-1797.
Natural law--History--18th century.
Princeton subject headings:
Free-law movement--History--18th century.
Höpfner, Ludwig Julius Friedrich, 1743-1797.
Natural law--History--18th century.