搜索结果: 1-1 共查到“Affect Birth”相关记录1条 . 查询时间(0.046 秒)
Did the Introduction of Food Stamps Affect Birth Outcomes in California?
Introduction Food Stamps Affect Birth in California
2014/3/18
Do welfare programs that raise the income of poor mothers affect infant mortality? Over the 1960s, U.S. infant mortality fell dramatically. The white rate fell from 23 to 17 per 1,000, while the Afric...