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West Virginia Coal Mine Accident Costs and Data
Clarence Watson Owings
其他書名
July 1, 1929 to June 30, 1934
出版U.S. Department of the Interior, Bureau of Mines, 1937
URLhttp://books.google.com.hk/books?id=X0zwdu1Fvf0C&hl=&source=gbs_api
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