Columbia subject headings:
Cologne (Germany)--Ethnic relations.
Jews--Germany--Cologne--History.
Harvard subject headings:
Cologne (Germany)--Ethnic relations.
Germania Judaica (Cologne)
Jews--Germany--Cologne--History.
Princeton subject headings:
Cologne (Germany)--Ethnic relations.
Germania Judaica (Cologne).
Jews--Germany (West)--Cologne--History.