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Young scientist giving a lecture on the background of the chalkboard with the scheme.

Stock Photo:
Image ID: 72978583
Release Information:
Signed model release filed with Shutterstock, Inc
Copyright: AleksandrN
Small
500x447 6.9"x6.2" (72dpi) 165 KB
Med
1000x893 3.3"x3.0" (300dpi) 591 KB
Large
4194x3744 14.0"x12.5" (300dpi) 5.7 MB
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