Columbia subject headings:
Harvard subject headings:
Competition, International
Displaced workers--United States.
Manpower policy--United States
Protectionism--Economic aspects--United States.
Structural unemployment--United States.
Unemployment--United States
United States--Commercial policy.
Princeton subject headings:
Competition, International.
Displaced workers--United States.
Manpower policy--United States.
Protectionism--Economic aspects--United States.
Structural unemployment--United States.
Unemployment--United States.
United States--Commercial policy.