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Rediscovery of the Elements: Rhenium and Technetium
Article describing the discovery of rhenium and technetium by Walter Karl Friedrich Noddack and Ida Eva Noddack-Tacke. Information regarding pertinent locations is included.
Rediscovery of the Elements: Thorium
Article recounting the discovery of the element Thorium in Norway by Hans Morten Thrane Esmark. Maps and tourist information regarding the area are provided.
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