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Credit
Maladies de l'oreille : exploration de l'oreille à l'état physiologique et pathologique : examen devant les conseils de révision des sujets qui sont ou se prétendent atteints de surdité / par D.-M. Levi. Public Domain Mark. Source: Wellcome Collection.
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This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.