Columbia subject headings:
Harvard subject headings:
Holocaust, Jewish (1939-1945)--Congresses
National socialism--Historiography--Congresses.
World War, 1939-1945--Concentration camps--Historiography--Congresses.
Princeton subject headings:
National socialism--Historiography--Congresses.
World War, 1939-1945--Concentration camps--Historiography--Congresses.