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Credit
Über die Bedeutung der Bursa pharyngea für die Erkennung und Behandlung gewisser Nasenrachenraum-Krankheiten / von G.L. Tornwaldt. 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.