Sınavlar için hazırlanıyor. Laboratuvar mikroskop. çocuk günü. Küçük çocuklar laboratuvarı. Öğrenciler mikroskopla Biyoloji deneyleri yapmak. Kimya mikroskop. Küçük çocuklar okul laboratuarında kimya öğrenme. - Stok Fotoğraf ve Görsel

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