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Accident Experience and Direct Costs in Some Colorado Coal Mines, 1929-33
Edward H. Denny
F. R. Jennings
出版
U.S. Department of the Interior, Bureau of Mines
, 1935
URL
http://books.google.com.hk/books?id=OaQawybZdvkC&hl=&source=gbs_api
EBook
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