Columbia subject headings:
Harvard subject headings:
Armenian Genocide, 1915-1923--Congresses.
Genocide--History--20th century--Congresses.
Holocaust, Jewish (1939-1945)--Congresses
Princeton subject headings:
Armenian Genocide, 1915-1923--Congresses.
Genocide--History--20th century--Congresses.
Holocaust, Jewish (1939-1945)--Congresses.