Optometry by the subjective method : a paper read at the meeting of the British Medical Association, London, July, 1895 / by George J. Bull.
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Optometry by the subjective method : a paper read at the meeting of the British Medical Association, London, July, 1895 / by George J. Bull. 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