Stereoscopic treatment of heterophobia and heterotropia : designed to accompany the phoro-optometer stereoscope and the Wells selection of stereoscopic charts / by David W. Wells.

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Stereoscopic treatment of heterophobia and heterotropia : designed to accompany the phoro-optometer stereoscope and the Wells selection of stereoscopic charts / by David W. Wells. In copyright. Source: Wellcome Collection.

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