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Chemical formulas on the blackboard

Stock Photo:
Image ID: 101790346
Release Information: N/A
Copyright:
Small
500x280 6.9"x3.9" (72dpi) 150 KB
Med
1000x560 3.3"x1.9" (300dpi) 584 KB
Large
4712x2641 15.7"x8.8" (300dpi) 6.3 MB
Super
9424x5282 31.4"x17.6" (300dpi) approx.26.9 MB
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