syncope
发表于 2025-3-30 08:52:15
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多产鱼
发表于 2025-3-30 15:02:55
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英寸
发表于 2025-3-30 20:11:51
Ilaria Vigorelli,Antonio Malo,Giulio Masperoloyed by the Princeton European Fertility Project). (Weir 1994:330–331). It is inconceivable that such a fall occurred in conflict with family economic needs, and thus it is evidence that French children were not of net economic value to their parents by the end of the eighteenth century.
CAB
发表于 2025-3-30 23:26:21
Book 2006ow less capricious and most people live long lives. Women no longer average six or seven births but in most economically advanced countries less than two — insufficient to replenish national populations. Most of this dramatic social change has occurred over the last 150 years. But the question remai
evince
发表于 2025-3-31 00:55:28
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完整
发表于 2025-3-31 07:12:27
Pretransitional Population Control and Equilibriumat the typical pattern for most of the world’s population had for aeons been one of early marriage followed by uncontrolled fertility. A similar conclusion was drawn by Knodel (1977, p. 242), who decided that birth control must have been adopted by the vast majority of mankind only fairly recently and that its practice was innovative.
POWER
发表于 2025-3-31 13:13:30
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heart-murmur
发表于 2025-3-31 15:30:18
lity and fertility transition theory.The examination of the .The demographic transition is the change in the human condition from high mortality and high fertility to low mortality and low fertility. Death is now less capricious and most people live long lives. Women no longer average six or seven b
ECG769
发表于 2025-3-31 18:23:00
Tomoya Takeda,Noriyuki Kida,Tadayuki Haral literature, especially that in the ecological tradition, and in works on anthropology and palaeodemography. This paper examines how these ideas developed and questions whether this near-consensus could prove to be fallible.
聋子
发表于 2025-4-1 00:51:43
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