Columbia subject headings:
Harvard subject headings:
Buchenwald (Concentration camp)
Communists--Germany--History--20th century--Sources.
Communists--Germany--History--20th century.
Kommunistische Partei Deutschlands--History--Sources.
Kommunistische Partei Deutschlands--History.
Political prisoners--Germany--History--20th century--Sources.
Political prisoners--Germany--History--20th century.
Sozialistische Einheitspartei Deutschlands--History--Sources.
Sozialistische Einheitspartei Deutschlands--History.
World War, 1939-1945--Prisoners and prisons, German--Sources.
World War, 1939-1945--Prisoners and prisons, German.
Princeton subject headings:
Buchenwald (Concentration camp)
Communists--Germany--History--20th century.
Kommunistische Partei Deutschlands--History.
Political prisoners--Germany--History--20th century.
Sozialistische Einheitspartei Deutschlands--History.
World War, 1939-1945--Prisoners and prisons, German.