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A MEANS OF FACILITATING THE COMPREHENSION OF SOME OF THE PHENOMENA OF ASTIGMATISM.
Lancet, The, 1890exaly
ON AN IMPROVED OPTOMETER FOR ESTIMATING THE DEGREE OF ABNORMAL REGULAR ASTIGMATISM.
Lancet, The, 1876exaly
ON AN IMPROVED OPTOMETER FOR ESTIMATING THE DEGREE OF ASTIGMATISM AND OTHER ERRORS OF REFRACTION.
Lancet, The, 1886exaly