Columbia subject headings:
College teachers--Germany--Halle an der Saale--Societies, etc.
Martin-Luther-Universität Halle-Wittenberg.
Harvard subject headings:
Germany--Intellectual life--19th century.
Germany--Intellectual life--20th century.
Spirituskreis (Universität Halle-Wittenberg)
Princeton subject headings:
College teachers--Germany--Halle an der Saale--Societies, etc.
Martin-Luther-Universität Halle-Wittenberg.