TY - JOUR A1 - Rendall, Michael S. A1 - Ekert-Jaffé, Olivia A1 - Joshi, Heather A1 - Lynch, Kevin A1 - Mougin, Rémi T1 - Universal versus Economically Polarized Change in Age at First Birth: A French–British Comparison Y1 - 2009 DO - 10.1111/j.1728-4457.2009.00262.x JF - Population and Development Review VL - 35 IS - 1 SP - 89 EP - -115 ER -