Columbia subject headings:
Harvard subject headings:
Authors, German--19th century--Biography
Darmstadt (Germany)--Intellectual life.
Ploennies, Luise von, 1803-1872.
Princeton subject headings:
Authors, German--19th century--Biography.
Darmstadt (Germany)--Intellectual life.
Ploennies, Luise von, 1803-1872.