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Google圖書搜尋
Active List of Permissible Explosives and Blasting Devices Approved Before February 28, 1961
N. E. Hanna
出版
United States Department of the Interior, Bureau of Mines
, 1962
URL
http://books.google.com.hk/books?id=PF7ra_v27XAC&hl=&source=gbs_api
EBook
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