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Credit
Mikroskopische Analyse des curländischen Meteorpapiers von 1686 und Erläuterung desselben als ein Produkt jetzt lebender Conserven und Infusorien / von C.G. Ehrenberg. 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.