Căutare
Descoperă oameni noi, creează noi conexiuni și faceti-va noi prieteni
No data to show
(plural) the most basic facts or elements
(plural) the most basic facts or elements
(chemistry) a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium
(chemistry) a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium
(chemistry) a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium