The returns to skill in the United States across the twentieth century

Bibliográfalaš dieđut
Váldodahkki:	Goldin, Claudia
Eará dahkkit:	Katz, Lawrence F.
Materiálatiipa:	Girji
Giella:	eaŋgalasgiella
Almmustuhtton:	Cambridge, Mass. National Bureau of Economic Research 1999.
Ráidu:	NBER working paper series no.7126
Fáttát:	Wage differentials > United States. Wages > Skilled labor > United States. Education > Economic aspects > United States. Human capital > United States.