Columbia subject headings:
Harvard subject headings:
Corporate profits--United States.
Corporate profits.
Industrial location--United States
Industrial location.
Oligopolies--United States.
Oligopolies.
Regional economic disparities.
Regional economics.
United States--Economic conditions--1945---Regional disparities.
Princeton subject headings:
Corporate profits--United States.
Corporate profits.
Industrial location--United States.
Oligopolies--United States.
Oligopolies.
Regional economic disparities.
Regional economics.
United States--Economic conditions--1945---Regional disparities.