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Date: 2012-07-29 19:04:19Helium Exponentials Particle physics Nuclear physics Radioactive decay Russell Humphreys Abiogenesis Half-life Alpha particle Physics Radioactivity Chemistry | Microsoft Word - AugSep12 FinalAdd to Reading ListSource URL: www.youngearth.orgDownload Document from Source WebsiteFile Size: 603,38 KBShare Document on Facebook |