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Progress and Uniformity in Child-Labor Legislation: A Study in Statistical Measurement (Classic Reprint)/en-ca/progress-and-uniformity-in-child-labor-legislation-a-study-in-statistical-measurement-classic-reprint/295E4EE4-25CE-44D3-BFC1-A545BE015404.html295E4EE4-25CE-44D3-BFC1-A545BE015404
Progress and Uniformity in Child-Labor Legislation: A Study in Statistical Measurement (Classic Reprint)