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美国卫生研究院文献>Annals of Medicine For the Year ...
>Account of a Varioloid Epidemic Which Occurred in George Watsons Hospital in the Summer of 1835 with Remarks in Illustration of the Antivariolous Power of Vaccination
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Account of a Varioloid Epidemic Which Occurred in George Watsons Hospital in the Summer of 1835 with Remarks in Illustration of the Antivariolous Power of Vaccination