Helmholtz, Hermann von, 1821-1894. Helmholtz's treatise on physiological optics, translated from the 3d German ed. Edited by James P.C. Southall.

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Helmholtz, Hermann von, 1821-1894.

Helmholtz's treatise on physiological optics, translated from the 3d German ed. Edited by James P.C. Southall.

Physiological optics.

Southall, James P. C. (James Powell Cocke), 1871-