1 نتائج 'isotopes'
Isotopes (en)
Isótopo (es), Изотопы (ru), نظائر (ar), Isotope (fr)
Chemical elements
Radioisotopes
Science
> Chemical sciences
Isótopo (es), Изотопы (ru), نظائر (ar), Isotope (fr)
http://vocabularies.unesco.org/thesaurus/concept4986