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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
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Sample selection in the estimation of air bag and seat belt effectiveness
Levitt, Steven D.; Porter, Jack - In: The review of economics and statistics 83 (2001) 4, pp. 603-615
Persistent link: https://www.econbiz.de/10001627220