Columbia subject headings:
Longitudinal method--Congresses.
Social sciences--Research--Congresses.
Sociology--Methodology--Congresses.
Harvard subject headings:
Longitudinal method--Congresses.
Social sciences--Research--Congresses
Sociology--Methodology--Congresses
Princeton subject headings:
Longitudinal method--Congresses.
Social sciences--Research--Congresses.
Sociology--Methodology--Congresses.