Columbia subject headings:
Canada--Social conditions.
Social indicators--Canada.
Social indicators--United States.
United States--Social conditions--1960-1980.
Harvard subject headings:
Canada--Social conditions--1945-
Quality of life--Canada
Quality of life--United States
United States--Social conditions--1960-1980.
Princeton subject headings:
Canada--Social conditions.
Social indicators--Canada.
Social indicators--United States.
United States--Social conditions--1960- .