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File:Isotopeshareofgammadosewith30cmconcreteatchernobyl.png (911 × 623 (20 KB)) - 18:24, 11 June 2010File:Isotopeshareofgammadosewith10cmconcreteatchernobyl.png (911 × 623 (20 KB)) - 19:49, 11 June 2010File:Isotopeshareofgammadosewith20cmconcreteatchernobyl.png (911 × 623 (22 KB)) - 19:53, 11 June 2010