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Credit
Die Nerven des Herzens : ihre Anatomie und Physiologie / von E. von Cyon ; übersetzt von H.L. Heusner. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.