Columbia subject headings:
Industrial relations--Periodicals.
Industrial sociology--Periodicals.
Industries--Social aspects--Periodicals.
Working class--Periodicals.
Harvard subject headings:
Industrial relations.
Industrial sociology.
Industries--Social aspects
Labor.
Princeton subject headings:
Industrial relations--Periodicals.
Industrial sociology--Periodicals.
Industries--Social aspects--Periodicals.
Periodicals.
Working class--Periodicals.