Economic consequences of the seven-hour day and wage changes in the bituminous coal industry /
| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
Philadelphia :
University of Pennsylvania Press,
1939.
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| Series: | Major Industrial Research Unit studies ;
no. 32. |
| Subjects: |
| Physical Description: | xv,130p : map,tables,diagrams ; 24cm. |
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