TY - JOUR A1 - Singley, S. A1 - Landale, N. T1 - Incorporating origin and process in migration-fertility frameworks. The case of Puerto Rican women Y1 - 1998 DO - 10.2307/3005841 JF - Social Forces VL - 76 IS - 4 SP - 1437 EP - -1464 ER -