Columbia subject headings:
Harvard subject headings:
Jewish day schools--Germany--Bochum--History--Sources.
Jews--Germany--Bochum--History--Sources.
Synagogues--Germany--Bochum--History--Sources.
Princeton subject headings:
Bochum (Germany)--History--Sourcs.
Jews--Germany (West)--Bochum--History--Sources.
Kristallnacht, 1938.