Columbia subject headings:
Labor laws and legislation--Periodicals.
Labor market--Periodicals.
Labor policy--Periodicals.
Labor supply--Periodicals.
Manpower policy--Periodicals.
Harvard subject headings:
Labor laws and legislation--Periodicals
Labor market--Periodicals.
Labor policy--Periodicals.
Labor supply--Periodicals.
Manpower policy--Periodicals.
Princeton subject headings:
Labor supply--Effect of technological innovations on.
Labor supply.
Social security.
Wages.