File:NaturalBackgroundRadiation-1.jpg: Revision history

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11 March 2022

25 November 2021

21 November 2021

  • curprev 21:1321:13, 21 November 2021‎ imported>David MacQuigg‎ 318 bytes +318‎ {{Image_Details |description = Natural Background Radiation |author = Robert Hargraves, PhD |copyright = Robert Hargraves, PhD |source = https://electrifyingourworld.com/?page_id=834 |date-created = 2021 |pub-country = USA |notes...
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