- Química
- La tabla periodica
- Age 7+
-
level: 1 BGU
- Spanish
คำแนะนำของผู้เขียน
CONCEPTOS BASICOS QUIMICA Y CALCULO DE NUMERO DE NEUTRONES
Conceptos básico de la química
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คำแนะนำของผู้เขียน
CONCEPTOS BASICOS QUIMICA Y CALCULO DE NUMERO DE NEUTRONES