board green signposts

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Size: 3300px × 2460px
Location:
Photo credit: © breitformat / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: astronomy, blackboard, board, brilliancy, chalk, covering, education, educational, einstein, emc2, equation, establishment, green, ingenious, institution, learn, letter, light, mass, mathematics, physics, school, shield, signposts, simpers, speed, unequation, write