TY - JOUR T1 - Fifty years of unintended births: Education gradients in unintended fertility in the US, 1960-2013 AU - Hayford, Sarah R. AU - Guzzo, Karen Benjamin PY - 2016 DO - 10.1111/j.1728-4457.2016.00126.x SP - 313 EP - 341 JO - Population and Development Review VL - 42 IS - 2 SN - 0098-7921 ER -