Columbia subject headings:
Harvard subject headings:
Humanitarianism--History--20th century--Congresses.
International Committee of the Red Cross--History--20th century--Congresses.
Nobel Prize winners--History--20th century--Congresses.
World War, 1914-1918--Peace--Congresses.
Princeton subject headings:
Humanitarianism--History--20th century--Congresses.
International Committee of the Red Cross--History--20th century--Congresses.
Nobel Prize winners--History--20th century--Congresses.
World War, 1914-1918--Peace--Congresses.