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hand pointing idea lightbulb with various maths and science formula

Stock Photo:
Image ID: 121376860
Release Information: N/A
Copyright: Dusit
Small
500x463 6.9"x6.4" (72dpi) 140 KB
Med
1000x925 3.3"x3.1" (300dpi) 398 KB
Large
4000x3700 13.3"x12.3" (300dpi) 2.8 MB
Super
8000x7400 26.7"x24.7" (300dpi) approx.6.8 MB
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