1. Public Law 90-602 Radiation Control for Health and Safety Act of 1968 Washington DC.
2. Human exposure to nonionizing radiant energy—Potential hazards and safety standards
3. Foreign inclusions in stony meteorites—I. Carbonaceous chondritic xenoliths in the Kapoeta howardite
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5. On the Transmission Through Skin of Visible and Ultraviolet Radiation;Hansen K. G.;Acta Radiol.,1948