antique
background
book
books
brown
class
classroom
college
cover
culture
desk
educate yourself
education
knowledge
law
learn
lesson
library
literature
math
mathematics
old
optics
paper
pencil
physics
physics book
pile
publication
read
retro
school
science
sketch
stack
strange
student
study
study physics
table
teacher
textbook
theory
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定額
Sheet of an old physics book with the word Optics in Spanish in focus on a wooden table with reading glasses and a pencil to take notes.の素材 [FY310197446903]
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