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school blackboard
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Format
JPG 300 DPI
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Author:
dreamstime
License:
buy for Personal Use & Commercial
File Type:
JPG
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billboard
black
blackboard
blank
board
chalk
chalkboard
children
class
classroom
communication
concept
copy
cut
design
drawingannouncement
education
empty
frame
green
home
illustration
isolated
learning
lecture
lines
note
old
pattern
school
square
stand
study
surface
wood
wooden