Some Unsolved Child Labor Problems

被引：0

作者：

Johnson, Ethel M. ^{[1
]}

机构：

[1] Massachusetts Dept Labor & Ind, Boston, MA USA

来源：

AMERICAN JOURNAL OF PUBLIC HEALTH AND THE NATIONS HEALTH | 1929年 / 19卷 / 08期

关键词：

D O I：

10.2105/AJPH.19.8.893

中图分类号：

R1 [预防医学、卫生学];

学科分类号：

1004 ; 120402 ;

摘要：

引用

页码：893 / 897

页数：5

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