Watersheds in Child Mortality: The Role of Effective Water and Sewerage Infrastructure, 1880 to 1920
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We explore the first period of sustained decline in child mortality in the U.S. and provide estimates of the independent and combined effects of clean water and effective sewerage systems on under-five mortality. Our case is Massachusetts, 1880 to 1920, when authorities developed a sewerage and
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美国国家经济研究局创建时间：
2015-06-01
