Columbia subject headings:
Harvard subject headings:
Civilization--21st century--Congresses.
Culture--Congresses.
Culture--Methodology--Congresses.
Social history--21st century--Congresses.
Sociology--Congresses
Sociology--Methodology--Congresses
Princeton subject headings:
Civilization--21st century--Congresses.
Culture--Congresses.
Culture--Methodology--Congresses.
Social history--21st century--Congresses.
Sociology--Congresses.
Sociology--Methodology--Congresses.