![Retinoscopy (or Shadow Test) in the Determination of Refraction at One Meter Distance, with the Plane Mirror [electronic Resource]](thumb/default.jpg)
Retinoscopy (or Shadow Test) in the Determination of Refraction at One Meter Distance, with the Plane Mirror [electronic Resource]
By London Library S. University College, James 1858-1944 Thorington, John Herbert Parsons
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