TY - JOUR A1 - Nisén, J. A1 - Martikainen, P. A1 - Silventoinen, K. A1 - Myrskylä, M. T1 - Age-specific fertility by educational level in the Finnish male cohort born 1940‒1950 Y1 - 2014 DO - 10.4054/DemRes.2014.31.5 VL - 31 IS - 5 ER -