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Credit
An experimental enquiry into the properties of the Polygala senega : submitted, as an inaugural thesis, to the examination of the Reverend John Andrews ..., the Trustees, and medical professors of the University of Pennsylvania, on the eighth day of June, 1803 for the degree of Doctor of Medicine / by Thomas Massie. Public Domain Mark. Source: Wellcome Collection.
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This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)