ENVIRONMENTAL DUST STUDY OF ANTHRACITE COAL MINES OF EASTERN PENNSYLVANIA.
D003031:Coal; D004391:Dust; D004782:Environmental Health; D008906:Mining; D009787:Occupational Medicine; D010414:Pennsylvania; D011009:Pneumoconiosis; D013223:Statistics as Topic
D003031:Coal; D004391:Dust
DUST; ENVIRONMENTAL HEALTH; INDUSTRIAL MEDICINE; MINING; PENNSYLVANIA; PNEUMOCONIOSIS; STATISTICS