Natural Radiation Sources This chart from the NCRP shows all sources of natural radiation exposure and the percentage of our annual dose.
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Dec7 12 Last Modified: 2012-12-07 20:09:36 https://serc.carleton.edu/download/files/37199/natural_radiation_sources.pdf
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Radiation and Cancer http://serc.carleton.edu/NAGTWorkshops/health/case_studies/radiation_cance.html
Provenance National Council on Radiation Protection and Measurement
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