A STUDY OF PULMONARY DISEASE IN CERTAIN ONTARIO MINERS.
D002170:Canada; D006801:Humans; D008400:Mass Chest X-Ray; D009864:Ontario; D012829:Silicosis; D013223:Statistics as Topic; D014376:Tuberculosis; D014397:Tuberculosis, Pulmonary
CANADA; MASS CHEST X-RAY; SILICOSIS; STATISTICS; TUBERCULOSIS, PULMONARY