Measurements of ultraviolet radiation and illumination in American cities during the years 1931 to 1933 / by James E. Ives, W.A. Gill ; prepared by direction of the surgeon general.

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Gill, W. A.

Works from the collections

Measurements of ultraviolet radiation and illumination in American cities during the years 1931 to 1933 / by James E. Ives, W.A. Gill ; prepared by direction of the surgeon general.