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Factors Affecting Respirable Dust Generation from Longwall Roof Supports

John A. OrganiscakJeffrey M. ListakRobert A. Jankowski

出版	U.S. Department of the Interior, Bureau of Mines, 1985
URL	http://books.google.com.hk/books?id=up0JCXLbSHAC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN