Columbia subject headings:
Public opinion--United States.
Social surveys--United States--Longitudinal studies.
United States--Social conditions--1960-1980--Public opinion.
United States--Social conditions--1980-2020--Public opinion.
Harvard subject headings:
Public opinion--United States
Social surveys--United States
United States--Social conditions--1933-1945--Public opinion.
United States--Social conditions--1945---Public opinion.
United States--Social conditions--1960-1980--Public opinion
United States--Social conditions--1980-2020--Public opinion
Princeton subject headings:
Public opinion--United States.
Social surveys--United States--Longitudinal studies.
United States--Social conditions--1933-1945--Public opinion.
United States--Social conditions--1945-1960--Public opinion.
United States--Social conditions--1960-1980--Public opinion.
United States--Social conditions--1980-2020--Public opinion.