Empty Blackboard
Palabras clave
blackboard,
empty,
board,
blackboard,
slate,
blank,
black,
frame,
dark,
background,
billboard,
wood,
wooden,
writing,
chalk,
notice board,
notice,
stationery,
equipment,
article,
school,
class,
education,
horizontal,
learning,
isolated,
sheet,
on white
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