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Start Over Authors Welch, William Henry, 1850-1934, author ✖Remove constraint Authors: Welch, William Henry, 1850-1934, author Titles Considerations concerning some external sources of infection in their bearing on preventive medicine: the address in state medicine delivered before the American Medical Association at Newport on June 28, 1889 ✖Remove constraint Titles: Considerations concerning some external sources of infection in their bearing on preventive medicine: the address in state medicine delivered before the American Medical Association at Newport on June 28, 1889 Genre Addresses ✖Remove constraint Genre: Addresses

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  • Considerations concerning some external sources of infection in their bearing on preventive medicine: the address in state medicine delivered before the American Medical Association at Newport on June 28, 18891