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Mortality from Respiratory Diseases in Dusty Trades (inorganic Dusts) by Frederick L. Hoffman. [U.S. Bureau of Labor Statistics Bulletin. Whole Number 231. Industrial Accidents and Hygiene Series: No. 17. June 1918.].

United States. Congress. House

出版	1917
URL	http://books.google.com.hk/books?id=hJXbwQEACAAJ&hl=&source=gbs_api