Columbia subject headings:
Harvard subject headings:
Forced labor--Germany
Nationalsozialistische Deutsche Arbeiter-Partei. Schutzstaffel
Nazi concentration camp inmates--Germany--Correspondence
Nazi concentration camps--Germany--History
World War, 1939-1945--Concentration camps
Princeton subject headings:
Forced labor--Germany.
Nationalsozialistische Deutsche Arbeiter-Partei. Schutzstaffel
Nazi concentration camp inmates--Germany.
Nazi concentration camps--Germany.
World War, 1939-1945--Concentration camps.