1. Environmental Causes of Cancer of the Lung Other Than Tobacco Smoke
W.C. HUEPER, M.D. 
Diseases of the Chest 
Volume 30, Issue 2, Pages (August 1956)
DOI: /chest
Copyright © 1956 The American College of Chest Physicians Terms and Conditions

2. Figure 1
Diseases of the Chest  , DOI: ( /chest )
Copyright © 1956 The American College of Chest Physicians Terms and Conditions

3. Figure 2
(Reproduced by permission of the British Empire Cancer Campaign.)
Diseases of the Chest  , DOI: ( /chest )
Copyright © 1956 The American College of Chest Physicians Terms and Conditions

4. Figure 3
Diseases of the Chest  , DOI: ( /chest )
Copyright © 1956 The American College of Chest Physicians Terms and Conditions

5. Figure 4
Diseases of the Chest  , DOI: ( /chest )
Copyright © 1956 The American College of Chest Physicians Terms and Conditions

6. Figure 5
Diseases of the Chest  , DOI: ( /chest )
Copyright © 1956 The American College of Chest Physicians Terms and Conditions

7. Figure 5A
Diseases of the Chest  , DOI: ( /chest )
Copyright © 1956 The American College of Chest Physicians Terms and Conditions