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substances (en) > elem > fém > ritka földfém

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Creado: 2006-12-06T00:00:00Z

skos:notation: 24889

ritka földfém  

Definición

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

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