Pseudo-isochromatische Tafeln für die Prüfung des Farbensinnes / von Dr. J. Stilling.

Licence: Public Domain Mark

Credit: Pseudo-isochromatische Tafeln für die Prüfung des Farbensinnes / von Dr. J. Stilling. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.