Air Pollution and Chest Disease PETER V.V. HAMILL, M.D. Diseases of the Chest Volume 39, Issue 5, Pages 477-484 (May 1961) DOI: 10.1378/chest.39.5.477 Copyright © 1961 The American College of Chest Physicians Terms and Conditions
FIGURE 1 Diseases of the Chest 1961 39, 477-484DOI: (10.1378/chest.39.5.477) Copyright © 1961 The American College of Chest Physicians Terms and Conditions
FIGURE 2 Diseases of the Chest 1961 39, 477-484DOI: (10.1378/chest.39.5.477) Copyright © 1961 The American College of Chest Physicians Terms and Conditions