1 resultados para 'chemical elements'
Chemical elements
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