Columbia subject headings:
Harvard subject headings:
Profit-sharing--United States--Statistics--Periodicals.
White collar workers--Pensions--United States--Statistics--Periodicals.
White collar workers--Salaries, etc.--United States--Statistics--Periodicals.
Princeton subject headings:
Profit-sharing--United States--Statistics--Periodicals.
White collar workers--Salaries, pensions, etc.--United States--Statistics--Periodicals.