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Credit
Culturgeschichte und Naturwissenschaft : Vortrag gehalten am 24. März 1877 im Verein für wissenschaftliche Vorlesungen zu Köln / von Emil Du Bois-Reymond. 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.