The effects of duration and intermittency of exposure on the elimination of air-borne dust from high and low rank coal mines.
D000818:Animals; D001980:Bronchi / Q000502:physiology; D003032:Coal Mining; D004391:Dust / Q000032:analysis; D005260:Female; D005856:Germ-Free Life; D008198:Lymph Nodes; D008297:Male; D051381:Rats; D012044:Regression Analysis; D012737:Sex Factors; D013997:Time Factors
D004391:Dust