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C

Graphite is used in pencils;it is one of the allotropes of carbon.

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Uploaded on July 30, 2007
Taken on July 28, 2007

C

Graphite is used in pencils;it is one of the allotropes of carbon.

130 views
0 faves
1 comment
Uploaded on July 30, 2007
Taken on July 28, 2007
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