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(75 photos)
Open book in frame, illustration on black background
Stock Photo
ID:
1568370
Brain with glowing light bulb in frame, illustration on grey background
Glowing light bulb in frame, illustration on grey background
Four cogwheels in frame, illustration on grey background
Human head with gears in frame, illustration on grey background
Brain with gears in frame, illustration on grey background
Magnifying glass in frame, illustration on grey background
Square academic cap in frame, illustration on grey background
Closed book in frame, illustration on grey background
Opening book in frame, illustration on grey background
Open book in frame, illustration on grey background
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