Columbia subject headings:
Cities and towns--Germany--Congresses.
Cities and towns--Religious aspects--Christianity--Congresses.
Piety--Congresses.
Harvard subject headings:
Cities and towns--Germany--History--Congresses.
Cities and towns--Germany--Religious aspects--Christianity--Congresses.
Piety--Congresses.
Zimmermann, Gerd, 1924-
Princeton subject headings:
Cities and towns--Germany--History.
Cities and towns--Germany--Religious aspects--Christianity.
Germany--Church history.