01180nam 2200361 450 991071603920332120210520113638.0(CKB)5470000002517714(OCoLC)1251913560(EXLCZ)99547000000251771420210520d1977 ua 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierCoal mining health standards in Canada /prepared by Jean V. SwartzWashington, D.C. :Law Library, Library of Congress,1977.1 online resource (95 pages)Typescript.Includes bibliographical references.Coal mines and miningSafety regulationsCanadaCoal minersHealth and hygieneCanadaCoal mines and miningSafety regulationsCoal minersHealth and hygieneSwartz Jean V.1396459Library of Congress.Law Library,DLCGPOBOOK9910716039203321Coal mining health standards in Canada3471943UNINA