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A separation of elements in sandstone.
Appropriate that this was on the Chemistry building (at the University of Oxford).
See also Chromatography
|Source||originally posted to Flickr as Sandstone Chromotography|
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|current||02:40, 9 December 2009||1,209 × 1,462 (1.27 MB)||Flickr upload bot||Uploaded from http://flickr.com/photo/99287245@N00/534481867 using Flickr upload bot|
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