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Google圖書搜尋
Making Iron Powder in the Tunnel Kiln
Victor Hugo Gottschalk
出版
U.S. Department of the Interior, Bureau of Mines
, 1948
URL
http://books.google.com.hk/books?id=DYO4U_fbVkkC&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN