The Protection of young workers employed underground in coal mines
| Corporate Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
Geneva,
1948.
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| Subjects: |
| Item Description: | A la cabeza del titulo: Coal mines committee, 3d session. |
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| Physical Description: | 40 páginas, cuadros ; 24 cm |
| Bibliography: | Bibliografpia: al pie de algs. paginas. |