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Google圖書搜尋
Historical Summary of Coal-mine Explosions in the United States, 1810 [i.e 1910]-1958
Hiram Brown Humphrey
出版
U.S. Government Printing Office
, 1960
URL
http://books.google.com.hk/books?id=kz5QAQAAMAAJ&hl=&source=gbs_api