[Sanitary and hygienic working conditions at open coal pits and measures for their improvement].
D000015:Abnormalities, Multiple; D002971:Cleft Lip; D002972:Cleft Palate; D003031:Coal; D003560:Cysts; D006801:Humans; D008046:Lip / Q000002:abnormalities; D008906:Mining; D016272:Occupational Health
D003031:Coal
INDUSTRIAL HYGIENE; MINING
Sanitarno-gigienicheskie usloviia truda na otkrytykh ugol'nykh razrezakh i mery dlia ikh uluchsheniia.