Columbia subject headings:
Harvard subject headings:
Boxers (Sports)--Germany--Biography.
Harder, Otto Fritz, 1892-1956.
Nationalsozialistische Deutsche Arbeiter-Partei. Schutzstaffel--Biography.
Nazi concentration camp guards--Germany--Biography.
Nazi concentration camp inmates--Germany--Correspondence
Neuengamme (Concentration camp)
Romanies--Germany--Hannover--Biography.
Romanies--Nazi persecution--Germany--Biography.
Soccer players--Germany--Biography.
Trollmann, Rukelie, 1907-1943
Princeton subject headings:
Boxers (Sports)--Germany--Biography.
Harder, Otto Fritz, 1892-1956.
Nationalsozialistische Deutsche Arbeiter-Partei. Schutzstaffel--Biography.
Nazi concentration camp guards--Germany--Biography.
Nazi concentration camp inmates--Germany--Biography.
Neuengamme (Concentration camp)
Romani Genocide, 1939-1945--Germany.
Romanies--Germany--Hannover--Biography.
Soccer players--Germany--Biography.
Trollmann, Rukelie, 1907-1943.