Columbia subject headings:
Harvard subject headings:
Education--Germany--18th century.
Lichtenberg, Georg Christoph, 1742-1799.
Merck, Johann Heinrich, 1741-1791.
Wenck, Johann Martin, 1741-1803.
Princeton subject headings:
Education--Germany--18th century.
Lichtenberg, Georg Christoph, 1742-1799.
Merck, Johann Heinrich, 1741-1791.
Wenck, Johann Martin, 1741-1803.