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Clean periodic element table updated in 2011 december

Stock Photo:
Image ID: 96843295
Release Information: N/A
Copyright: Nicemonkey
500x388 6.9"x5.4" (72dpi) 214 KB
1000x775 3.3"x2.6" (300dpi) 602 KB
5031x3899 16.8"x13.0" (300dpi) 3.0 MB
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