TY - JOUR A1 - Casterline, J.B. A1 - Sinding, S.W. T1 - Unmet need for family planning in developing countries and implications for population policy Y1 - 2000 DO - 10.1111/j.1728-4457.2000.00691.x JF - Population and Development Review VL - 26 IS - 4 SP - 691 EP - -723 ER -