van Hoorn, W., & Keilmann, N. (1997). Birth expectations and their use in fertility forecasting.
Chicagoスタイル(17版)引用形式van Hoorn, Wim, , Nico Keilmann. Birth Expectations and Their Use in Fertility Forecasting. Luxembourg, 1997.
MLA(8版)引用形式van Hoorn, Wim, , Nico Keilmann. Birth Expectations and Their Use in Fertility Forecasting. 1997.
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