Μαθητές σε λευκό παλτό κρατώντας αντιδραστήρια σε φιάλες κάθεται στο εργαστήριο επιστήμης - Φωτογραφίες & Εικόνες Αρχείου

Schoolchildren in white coats holding reagents in flasks sitting in science laboratory

Little girl and boy in white coats plays a scientists in lab by using equipment.

Science for children. Delighted pretty nice girls smiling and enjoying their chemistry lesson while visiting a science laboratory

Kids making science experiments in laboratory. education

Children doing chemical research in laboratory. Dangerous experiment

Little girl and boy in white coats plays a scientists in lab by using equipment.