Columbia subject headings:
Goethe, Johann Wolfgang von, 1749-1832.
Schiller, Friedrich, 1759-1805.
Unger, Johann Friedrich.
Harvard subject headings:
Goethe, Johann Wolfgang von, 1749-1832
Schiller, Friedrich, 1759-1805
Unger, Johann Friedrich, 1753-1804.
Princeton subject headings:
Goethe, Johann Wolfgang von, 1749-1832.
Schiller, Friedrich, 1759-1805.