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Lua i Stíl Chicago (17ú heag.)American Public Health Association. Committee on Lead Poisoning. Occupational Lead Exposure and Lead Poisoning: A Report Prepared by the Committee on Lead Poisoning of the Industrial Hygiene Section of the American Public Health Association. New York, N. Y.: American Public Health Association, 1943.
Lua MLA (8ú heag.)American Public Health Association. Committee on Lead Poisoning. Occupational Lead Exposure and Lead Poisoning: A Report Prepared by the Committee on Lead Poisoning of the Industrial Hygiene Section of the American Public Health Association. American Public Health Association, 1943.