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Google圖書搜尋
Historical Documentation of Major Coal-mine Disasters in the United States Not Classified as Explosions of Gas Or Dust, 1846-1962
Charles M. Keenan
出版
U.S. Government Printing Office
, 1963
URL
http://books.google.com.hk/books?id=yX8Y1fLAF7MC&hl=&source=gbs_api
EBook
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