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Coal-mine Accidents in the United States, 1942

John Edward ConleyJohn Ferdinand BarkleyUnited States. Bureau of MinesWilliam Hawes CoghillWilliam Waugh AdamsEverett Percy PartridgeF. J. KennedyGlen Dale CoeL. E. GeyerThomas C. CheasleyVirginia E. WrennKenneth M. Waddell

出版	U.S. Government Printing Office, 1946
URL	http://books.google.com.hk/books?id=i2uTin4VH7sC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN