Δάσκαλος και μαθητής επιστήμονες σε προστατευτικά γυαλιά που εργάζεται στο χημικό εργαστήριο - Φωτογραφίες & Εικόνες Αρχείου

Teacher and student scientists in protective glasses working in chemical lab

Female Pupil And Teacher Conducting Chemistry Experiment

Teacher and student scientists in protective glasses making experiment in lab

Adult scientist and girl in goggles mixing reagents in tubes in laboratory

Man teacher and girl student scientists in protective glasses making experiment in lab

Female lab worker and female

Young female scientist holding test tube with chemical sample

Young female scientist holding test tube with chemical sample

Side view of concentrated scientists examining laboratory tube

Concentrated scientist in eyeglasses working with test tubes in lab

Side view of concentrated woman scientist working with microscope in laboratory

Side view of young man scientist holding test tube with reagent in lab

Smiling scientist holding molecular model in laboratory, focus on foreground

Professional chemists in white coats inspecting test tube with reagent in lab

Portrait of serious scientist working with laboratory tube

Portrait of concentrated scientists using digital tablet for analysis in laboratory