Columbia subject headings:
Harvard subject headings:
Biculturalism--Congresses.
Civilization--Philosophy--Congresses
Humanities--History--Congresses.
Knowledge, Sociology of--History--Congresses.
Science--History--Congresses
Princeton subject headings:
Civilization--Philosophy--Congresses.
Humanities--History--Congresses.
Knowledge, Sociology of--History--Congresses.
Science--History--Congresses.