Radioisotopic data from USGS laboratory in St. Petersburg, Florida
收藏data.gov2026-01-10 收录
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Specific activities of cesium-137 (half life = 30.17 years), lead-210 (half life = 22.3 years), radium-226 (half life = 1,600 years), thorium-234 (half life = 24.1...



