Columbia subject headings:
Harvard subject headings:
Gelsenkirchen (Germany)--Politics and government--Exhibitions.
Jews--Persecutions--Germany--Gelsenkirchen--Exhibitions.
National socialism--Germany--Gelsenkirchen--Exhibitions.
Princeton subject headings:
Gelsenkirchen (Germany)--Politics and government--Exhibitions.
Jews--Persecutions--Germany--Gelsenkirchen--Exhibitions.
National socialism--Germany--Gelsenkirchen--Exhibitions.