Green chalk blackboard, inside a chemistry laboratory room with several lab test glass beakers
Schlüsselwörter
chemistry,
school,
education,
chalk,
drawing,
science,
blackboard,
study,
board,
blackboard,
university,
formula,
vignetting,
doodle,
atom,
pattern,
learn,
scientific,
classroom,
college,
algebra,
teacher,
mathematical,
student,
cognition,
research,
calculation,
writing,
lesson,
biology,
flask,
book,
tube,
test,
laboratory,
green,
chemical,
class,
table,
wallpaper,
medicine,
bottle,
beaker,
back to school,
photo,
image,
picture
Deutsch
