1 resultados para 'chemical elements'
Chemical elements (en)
Elemento químico (es), Élément chimique (fr), Химические элементы (ru), عناصر كيميائية (ar)
Carbon, Isotopes, Phosphorus, Sulphur
Biochemicals, Chemicals, Hydrogen, Materials, Metals, Nitrogen, Oxygen
Science
> Chemical sciences
Elemento químico (es), Élément chimique (fr), Химические элементы (ru), عناصر كيميائية (ar)
http://vocabularies.unesco.org/thesaurus/concept139