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Credit
The diseases of the ear, their diagnosis and treatment : a text-book of aural surgery in the form of academical lectures / by Anton von Tröltsch ; translated from the German and edited by D.B. St. John Roosa ... from the second and last German edition. Public Domain Mark. Source: Wellcome Collection.
Provider
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.