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[[File:Aging 1800s Galena Attribution.jpg|200px|thumb|
[[File:Aging 1800s Galena Attribution.jpg|200px|thumb||A Galena rock from the 1800s that shows evidence of calcification. ]]
Latest revision as of 19:20, 13 February 2013
The change in the molecular structure of a chemical due to aging
Pages in category "Aging"
This category contains only the following page.