Mechanization, Employment, and Output Per Man in Bituminous-coal Mining
Author | : Willard Eugene Hotchkiss |
Publisher | : |
Total Pages | : 876 |
Release | : 1939 |
Genre | : Bituminous coal |
ISBN | : |
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Author | : Willard Eugene Hotchkiss |
Publisher | : |
Total Pages | : 876 |
Release | : 1939 |
Genre | : Bituminous coal |
ISBN | : |
Author | : United States. Work Projects Administration |
Publisher | : |
Total Pages | : 492 |
Release | : 1939 |
Genre | : |
ISBN | : |
Author | : United States. Work Projects Administration |
Publisher | : |
Total Pages | : 441 |
Release | : 1939 |
Genre | : |
ISBN | : |
Author | : Willard Eugene Hotchkiss |
Publisher | : |
Total Pages | : 441 |
Release | : 1939 |
Genre | : Bituminous coal |
ISBN | : |
Author | : Willard Eugene Hotchkiss |
Publisher | : |
Total Pages | : 0 |
Release | : 1939 |
Genre | : Bituminous coal industry |
ISBN | : |
Author | : United States. Bureau of Labor Statistics |
Publisher | : |
Total Pages | : 10 |
Release | : 1948 |
Genre | : Coal mines and mining |
ISBN | : |
Author | : United States. Bureau of Labor Statistics |
Publisher | : |
Total Pages | : 152 |
Release | : 1961 |
Genre | : Bituminous coal |
ISBN | : |
Author | : United States. Bureau of Labor Statistics |
Publisher | : |
Total Pages | : 60 |
Release | : 1935 |
Genre | : Labor productivity |
ISBN | : |