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Credit
Das Blut in seiner heilthätigen Beziehung zum Schmerz im Allgemeinen, und zu den (wahren und unwahren) Neuralgien insbesondere : zur vorläufigen Erörterung empfohlen / von C.J. Heidler. 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.