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خواص الصور في العدسات

Physical Science - Science

خواص الصور المتكونة بالعدسات

8 сынып БЖБ

Physical Science - Science

БЖБ орындау

Molécules

Physical Science - Science

formules des molécules

Transformation chimique-physique-mélange

Physical Science - Science

différencier les transformations chimiques, physiques des mélanges