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Start Over You searched for: Catalog Issue Year Decade 1940 - 1949 Remove constraint Catalog Issue Year Decade: 1940 - 1949 Sudoc Stem L 16.9 Remove constraint Sudoc Stem: L 16.9

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11. Chromium poisoning, cause and prevention.

14. Lead poisoning, cause and prevention.

15. Manganese poisoning, cause and prevention.

16. Mercury poisoning, cause and prevention.

17. Metal fume fever, cause and prevention.

19. Silicosis, cause and prevention.