Refraction and how to refract : including sections on optics, retinoscopy, the fitting of spectacles and eyeglasses, etc.
- Thorington, James, 1858-1944.
About this work
London : Raphaels, 1910.
5th revised ed.
xviii, 324 pages : illustrations ; 25 cm
Location of original
This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)
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