Fourteen and fifteen year old children in industry /
Uloženo v:
| Korporativní autor: | |
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| Typ dokumentu: | Kniha |
| Jazyk: | Angličtina |
| Vydáno: |
Harrisburg, Pennsylvania :
Commonwealth of Pennsylvania, Department of Labor and Industry,
1927
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| Edice: | Special bulletin (Pennsylvania. Department of Labor and Industry) ;
no. 21 |
| Témata: |
| Fyzický popis: | 29 stran, 1 složená příloha |
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