History of the periodic table
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What links here
Didymium
Photographic filter
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Di
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1874 in science
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Per Teodor Cleve
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Praseodymium
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Monazite
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Carl Auer von Welsbach
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Rare-earth element
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Chemical symbol
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Promethium
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Neodymium
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Lanthanum
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Henry Moseley
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