TY - CHAP A1 - Thomson, E. A1 - Gray, E. A1 - Carlson, M.J. T1 - Multi-partner fertility in Europe and the United States Y1 - 2020 DO - 10.1007/978-3-030-48519-1_8 A3 - Schoen, R. T2 - Analyzing contemporary fertility CY - Cham PB - Springer International Publishing ER -