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Dubnium - The Chemical Elements
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Dubnium | Synthetic, Radioactive, Transuranic | Britannica
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Interactive Periodic Table - LabDeck
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Element of the week: dubnium | Chemistry | The Guardian
Dubnium (version 1) - Periodic Table of Videos - YouTube
Dubnium | Synthetic, Radioactive, Transuranic | Britannica
INTERNET Database of Periodic Tables | Chemogenesis