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Start Over You searched for: Subjects Pneumonia, Bacterial -- etiology Remove constraint Subjects: Pneumonia, Bacterial -- etiology Authors Welch, William Henry, 1850-1934, author Remove constraint Authors: Welch, William Henry, 1850-1934, author Titles President's address: the etiology of acute lobar pneumonia, considered from a bacteriological point of view Remove constraint Titles: President's address: the etiology of acute lobar pneumonia, considered from a bacteriological point of view

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