American Economic Association
Estimates of the Economic Return to Schooling from a New Sample of Twins
申请电动车牌照Author(s): Orley Ashenfelter and Alan Krueger
Source: The American Economic Review, Vol. 84, No. 5 (Dec., 1994), pp. 1157-1173 Published by: American Economic Association
Stable URL: /stable/2117766离子反应习题
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