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Review of Fatalities in the California Petroleum Industry During the Calendar Year, 1931

R. L. Marek

出版	Department of Commerce, U.S. Bureau of Mines, 1932
URL	http://books.google.com.hk/books?id=TdOTvz1C_jUC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN