"Belastinghervormingen." . . "USA." . . "Arbeidstijd." . . . . "Inkomstenbelasting." . . "Verenigde Staten." . . "National Bureau of Economic Research (Estados Unidos)" . . "fleksibilitet-arbejdsmarked." . . . . . . . . . . . . . . . . . . . . "Labor supply response to the earned income tax credit" . "Labor supply response to the earned income tax credit"@en . . "Labor Supply Response to the Earned Income Tax Credit" . . "Labor Supply Response to the Earned Income Tax Credit"@en . . . . . . . . . . . . . . . "Arbeidsparticipatie." . . "National Bureau of Economic Research" . . "skatter." . .