Laboratuvar mikroskobu ve test tüpleri. Kimya deneyimi. Okula ve mutlu zamanlara. Neşeli gülümseyen küçük çocuk mavi duvarda eğleniyor. - Stok Fotoğraf ve Görsel

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A chemistry demonstration. Back to school. Child from elementary school. Portrair close up. They carried out a new experiment in chemistry

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