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Syringe Needle Medicine Shot Injection Medication Vaccine Chalk Board Research 3d Illustration
Keywords:
education
teaching
seminar
studying
mathematical symbol
symbol
teacher
chalk - art equipment
blackboard
intelligence
chalk drawing
analyzing
doodle
science
backgrounds
illustration
algebra
student
formula
classroom
research
drawing - activity
mathematics
school building
solution
learning
university
writing
chalk board doodle
university science glass
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