TY - JOUR A1 - Raymo, J.M. A1 - Musick, K. A1 - Iwasawa, M. T1 - Gender equity, opportunity costs of parenthood, and educational differences in unintended first births: Insights from Japan Y1 - 2015 DO - 10.1007/s11113-014-9348-3 VL - 34 IS - 2 ER -