ytterbite 1
rzeczownikdomena: substancja
Princeton WordNet [ver.3.1]
Definicja
a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium
a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium
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