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Start Over You searched for: Subjects Pennsylvania -- epidemiology Remove constraint Subjects: Pennsylvania -- epidemiology Authors Clayton, George D., author Remove constraint Authors: Clayton, George D., author Authors Gafafer, W. M. (William McKinley), 1896- author Remove constraint Authors: Gafafer, W. M. (William McKinley), 1896- author

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1. Air pollution in Donora, Pa: epidemiology of the unusual smog episode of October 1948 : preliminary report