TY - JOUR A1 - Fapounda, R.E. A1 - Todaro, P.M. T1 - Family structure, implicit contracts, and the demand for children in Southern Nigeria Y1 - 1988 DO - 10.2307/1973625 JF - Population and Development Review VL - 14 IS - 4 SP - 571 EP - -594 ER -