Columbia subject headings:
Civilization, Modern--1950---Congresses.
Humanism--Congresses.
Humanistic Judaism--Congresses.
Harvard subject headings:
Civilization, Modern--1950---Congresses
Humanism--Congresses.
Humanistic Judaism--Congresses.
Princeton subject headings:
Humanity--Congresses.
Religion and politics--Congresses.
World politics--20th century--Congresses.