Improvements of labor conditions in the United States.
| 第一著者: | |
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| フォーマット: | 図書 |
| 言語: | English |
| 出版事項: |
Philadelphia
The American Academy of Political and Social Science
[c1906].
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| シリーズ: | Annals of the American Academy of Political and Social Science, v. 27, no. 3
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| 主題: |