Columbia subject headings:
Harvard subject headings:
Middle class--Germany--Halle an der Saale--History.
Social groups--Germany--Halle an der Saale--History.
Social structure--Germany--Halle an der Saale--History.
Sociology, Urban--Germany--Halle an der Saale--History.
Urban policy--Germany--Halle an der Saale--History.
Princeton subject headings:
Middle class--Germany--Halle an der Saale--History.
Social groups--Germany--Halle an der Saale--History.
Social structure--Germany--Halle an der Saale--History.
Sociology, Urban--Germany--Halle an der Saale--History.