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Understanding the black-white test score gap in the first two years of school
Fryer, Roland G. <Jr.>; Levitt, Steven D. - In: The review of economics and statistics 86 (2004) 2, pp. 447-464
Persistent link: https://www.econbiz.de/10002076366
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Evidence that seat belts are as effective as child safety seats in preventind death for children aged two and up
Levitt, Steven D. - In: The review of economics and statistics 90 (2008) 1, pp. 158-163
Persistent link: https://www.econbiz.de/10003690056