foliage 发表于 2025-3-28 15:51:26

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overweight 发表于 2025-3-28 21:16:05

https://doi.org/10.1007/978-0-387-98128-4ates implies the probability that a girl aged . has a living mother and great-grandmother, as well as her expected number of daughters, sisters, aunts, nieces, and cousins. Certain assumptions are required to draw the implications, some stronger than others. The formulas of this chapter in effect se

处理 发表于 2025-3-29 02:56:17

https://doi.org/10.1007/978-3-031-54978-6d production by the activities of individuals seeking to maximize their utility. The fact that nontrivial problems of aggregation arise, and that the microelements often turn out on closer examination to be unrealistic constructions, does not deprive them of explanatory and predictive value.

MILK 发表于 2025-3-29 06:33:28

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碎石 发表于 2025-3-29 09:25:01

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epicardium 发表于 2025-3-29 14:12:31

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ascend 发表于 2025-3-29 15:59:19

https://doi.org/10.1007/978-3-030-89972-1in birth rates have a larger influence on the age distribution than do differences in death rates. They often claim that a poor country whose population is growing rapidly will increase its per capita income faster if it lowers its birth rate rather than maintaining it at a high level.

有常识 发表于 2025-3-29 22:36:20

Springer Texts in Statisticshttp://image.papertrans.cn/a/image/159923.jpg

GENRE 发表于 2025-3-30 03:04:28

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套索 发表于 2025-3-30 07:33:29

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查看完整版本: Titlebook: Applied Mathematical Demography; Nathan Keyfitz Textbook 19852nd edition Springer-Verlag New York 1985 REFA.death.demography.development.f