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Credit
Das Naphtalin in der Heilkunde und in der Landwirthschaft : mit besonderer Rücksicht auf seine Verwendung zur Vertilgung der Reblaus / von Ernst Fischer. 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.