Blackboard or chalkboard background
Schlüsselwörter
background,
black,
board,
blackboard,
close,
closeup,
education,
empty,
grey,
nobody,
chalk,
blackboard,
photograph,
notice board,
communication,
grey,
macro,
rubbed,
photo,
school,
blank,
slate,
smudged,
horizontal,
abstract,
wall,
background,
billboard,
design,
class,
classroom,
surface
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