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substances (en) > عناصر > فلزات > عناصر کمیاب خاک

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Created: 2007-04-20T00:00:00Z

Notation: 24889

عناصر کمیاب خاک  

Definition

  • Information A rare-earth element or rare-earth metal, as defined by IUPAC is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium. (en)

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URI

http://aims.fao.org/aos/agrovoc/c_24889

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