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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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D
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Dysprosium
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INFOTEXT
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1992-09-02
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An element, one of the yttrium group of rare
earths (symbol Dy, atomic number 66, relative
atomic mass 162.51). It was discovered in
1886 by Lecoq de Boisbaudran (1838-1912).