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black and white picture of a chalkboard with formulas

Stock Photo:
Image ID: 69278935
Release Information: N/A
Copyright: Oliver Sved
Small
500x332 6.9"x4.6" (72dpi) 93 KB
Med
1000x664 3.3"x2.2" (300dpi) 322 KB
Large
4288x2848 14.3"x9.5" (300dpi) 4.4 MB
Super
8576x5696 28.6"x19.0" (300dpi) approx.17.8 MB
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