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The effect of health and poverty on early childhood cognitive development
Welsch, David M.; Zimmer, David M. - In: Atlantic economic journal : AEJ 38 (2010) 1, pp. 37-49
Persistent link: https://www.econbiz.de/10008696861
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After-school supervision and children's cognitive achievement
Welsch, David M.; Zimmer, David M. - In: The B.E. journal of economic analysis & policy 8 (2008) 1, pp. 1-25
Persistent link: https://www.econbiz.de/10009548509