Cases illustrating various types of scotoma in the visual field : portion of a lecture on "The visual field as a factor in diagnosis" delivered before the J. M. Da Costa Medical Society of the Jefferson Medical College / by G. E. De Schweinitz.

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Cases illustrating various types of scotoma in the visual field : portion of a lecture on "The visual field as a factor in diagnosis" delivered before the J. M. Da Costa Medical Society of the Jefferson Medical College / by G. E. De Schweinitz. Public Domain Mark. Source: Wellcome Collection.

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