Technology, employment, and output per man in iron mining /
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Corporate Authors: | , |
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Other Authors: | |
Format: | Book |
Language: | English |
Published: |
Philadelphia, Pa. :
Federal Works Agency, Work Projects Administration, National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques : United States Department of the Interior, Bureau of Mines,
1940
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Series: | Mineral technology and output per man studies ;
rept. no. E-13. |
Subjects: |