The Wills hospital of Philadelphia : the influence of European and British ophthalmology upon it, and the part it played in the last 100 years in developing ophthalmology in America / by William Campbell Posey and Samuel Horton Brown.

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The Wills hospital of Philadelphia : the influence of European and British ophthalmology upon it, and the part it played in the last 100 years in developing ophthalmology in America / by William Campbell Posey and Samuel Horton Brown. Public Domain Mark. Source: Wellcome Collection.