Columbia subject headings:
Capitalism--United States--History--20th century.
Marxian economics.
Profit--United States--History--20th century.
United States--Economic conditions--1945-
Harvard subject headings:
Capitalism--United States--History--20th century.
Marxian economics.
Profit--United States--History--20th century.
United States--Economic conditions--1945-
Princeton subject headings:
Capitalism--United states--History--20th century.
Marxian economics.
Profit--United States--History--20th century.
United States--Economic conditions--1945-