Columbia subject headings:
Authors, German--Biography.
Ernst, Paul, 1866-1933.
Hartleben, Otto Erich, 1864-1905.
Löwen, Johann Friedrich, 1727-1771.
Harvard subject headings:
Authors, German--Biography
Ernst, Paul, 1866-1933.
Hartleben, Otto Erich, 1864-1905.
Löwen, Johann Friedrich, 1727-1771.
Princeton subject headings:
Authors, German--Biography.
Ernst, Paul, 1866-1933.
Hartleben, Otto Erich, 1864-1905.
Löwen, Johann Friedrich, 1727-1771.