Das Accommodationsvermögen der Augen : nach Dr. A. Cramer zu Groningen und Prof. Donders zu Utrecht / von C.H. Schauenburg.
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Das Accommodationsvermögen der Augen : nach Dr. A. Cramer zu Groningen und Prof. Donders zu Utrecht / von C.H. Schauenburg. Credit: 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.. Public Domain Mark