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点击下载：复旦大学：《中国人口与发展》PPT教学课件_Lecture 7 Demographic Transition and Population Aging

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Five Stages of Demographic Transition 3 Birth rate Death rate Total Population TimeFive Stages of Demographic Transition

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点击下载：复旦大学：《中国人口与发展》PPT教学课件_Lecture 7 Demographic Transition and Population Aging

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