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Metal-mine Accidents in the United States During the Calendar Year 1928
Ben Edwin Lindsly
Charles George Maier
Harmon Edward Keyes
Harold Carl Miller
Spencer Pritchard Howell
William Waugh Adams
W. B. Berwald
出版
U.S. Government Printing Office
, 1930
URL
http://books.google.com.hk/books?id=nWqxDVjlFCgC&hl=&source=gbs_api
EBook
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