Columbia subject headings:
Harvard subject headings:
Forced labor--Germany--Gelsenkirchen--History--20th century.
Gelsenberg Benzin AG.
World War, 1939-1945--Conscript labor--Germany--Gelsenkirchen.
World War, 1939-1945--Prisoners and prisons, German.
Princeton subject headings:
Forced labor--Germany--Gelsenkirchen.
Gelsenberg Benzin AG.
Jewish women in the Holocaust--Germany--Gelsenkirchen.
World War, 1939-1945--Conscript labor--Germany--Gelsenkirchen.