TY - JOUR A1 - Kohler, H.-P. A1 - Behrman, J.R. A1 - Watkins, S.C. T1 - Empirical assessments of social networks, fertility and family planning programs: nonlinearities and their implications Y1 - 2000 DO - 10.4054/DemRes.2000.3.7 JF - Demographic Research VL - 3 IS - 7 ER -