Reflections on yellow fever periods, or, a particular investigation of the long contested question, whether the yellow fever can originate amongst us, or, is always imported from abroad / by Lyman Spalding, M.D. ; read before the New-York County Medical Society, 13th Sept. 1819.

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Reflections on yellow fever periods, or, a particular investigation of the long contested question, whether the yellow fever can originate amongst us, or, is always imported from abroad / by Lyman Spalding, M.D. ; read before the New-York County Medical Society, 13th Sept. 1819. Public Domain Mark. Source: Wellcome Collection.

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