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Some Preliminary Data on Methods for Controlling the Dust Hazards in Mechanical Mining

Clarence Watson Owings

出版	U.S. Department of the Interior, Bureau of Mines, 1941
URL	http://books.google.com.hk/books?id=1NzIlOOdOM4C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN