Philosophical, medical, and experimental essays ... To which is added an appendix; containing a letter to the author from Dr. Saunders, on the solution of human calculi / [Thomas Percival].
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Philosophical, medical, and experimental essays ... To which is added an appendix; containing a letter to the author from Dr. Saunders, on the solution of human calculi / [Thomas Percival]. Credit: Wellcome Collection. Public Domain Mark