TY - RPRT A1 - Abramitzky, R. A1 - Boustan, L.P. A1 - Eriksson, K. T1 - Cultural assimilation during the age of mass migration Y1 - 2016 DO - 10.3386/w22381 PB - National Bureau of Economic Research CY - Cambridge T3 - NBER working paper 22381 ER -