Experimental research on the course of the optic fibres / by George Dean and C. H. Usher.

A monograph on albinism in man / by Karl Pearson, E. Nettleship, and C.H. Usher.

On the inheritance of retinitis pigmentosa, with notes of cases / by C.H. Usher.

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Usher, C. H.

Works from the collections

Experimental research on the course of the optic fibres / by George Dean and C. H. Usher.

A monograph on albinism in man / by Karl Pearson, E. Nettleship, and C.H. Usher.

On the inheritance of retinitis pigmentosa, with notes of cases / by C.H. Usher.