Columbia subject headings:
Educators--Germany--Correspondence.
Erhard, Johann Benjamin, 1766-1827--Correspondence.
Herbert, Franz Paul von, 1759-1811--Correspondence.
Niethammer, Friedrich Immanuel, 1766-1848--Correspondence.
Philosophers--Austria--Correspondence.
Philosophers--Germany--Correspondence.
Harvard subject headings:
Princeton subject headings:
Educators--Germany--Correspondence.
Erhard, Johann Benjamin, 1766-1827--Correspondence.
Herbert, Franz Paul von, 1759-1811--Correspondence.
Niethammer, Friedrich Immanuel, 1766-1848--Correspondence.
Philosophers--Austria--Correspondence.
Philosophers--Germany--Correspondence.