A rationale of the laws of cerebral vision : comprising the laws of single and of erect vision, deduced upon the principles of dioptrics / by John Fearn.

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A rationale of the laws of cerebral vision : comprising the laws of single and of erect vision, deduced upon the principles of dioptrics / by John Fearn. Credit: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London). Public Domain Mark