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Estimated average ionizing radiation by source at the US population level in 2006

Estimated average ionizing radiation by source at the US population level in 2006
%: percent.
Reprinted with permission of the National Council on Radiation Protection and Measurements, http://NCRPonline.org. Ionizing radiation exposure of the population of the United States. Bethesda, MD: National Council on Radiation Protection and Measurements; 2009: Report No 160. Copyright © 2009.
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