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Credit
Ueber die Ernährung der Pflanzen : mit besonderer Rücksicht auf die Bedingungen ihres Gedeihens in verschiedenen Höhen der Alpen / von Adolph Schlagintweit. 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.