Columbia subject headings:
Collective labor agreements--White collar workers--United States--Periodicals.
White collar workers--Legal status, laws, etc.--United States--Periodicals.
Harvard subject headings:
Princeton subject headings:
Collective labor agreements--White collar workers--United States--Periodicals.
Labor--Periodicals.
Periodicals.
White collar workers--Legal status, laws, etc.--United States--Periodicals.