File:Rareearthoxides.jpg

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Description
English: These rare-earth oxides are used as tracers to determine which parts of a watershed are eroding. Clockwise from top center: praseodymium, cerium, lanthanum, neodymium, samarium, and gadolinium.
Source http://www.ars.usda.gov/is/graphics/photos/jun05/d115-1.htm
Author Peggy Greb, US department of agriculture

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Public domain This image is in the public domain because it contains materials that originally came from the Agricultural Research Service, the research agency of the United States Department of Agriculture.

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The original description page was here. All following user names refer to en.wikipedia.
  • 2009-06-27 10:49 Materialscientist 640×416× (175375 bytes) {{Information |Description = These rare-earth oxides are used as tracers to determine which parts of a watershed are eroding. Clockwise from top center: praseodymium, cerium, lanthanum, neodymium, samarium, and gadolinium. |Source = http://ww

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Date/TimeThumbnailDimensionsUserComment
current11:38, 25 April 2015Thumbnail for version as of 11:38, 25 April 20151,200 × 780 (573 KB)Materialscientist (talk | contribs)resolution
04:55, 1 June 2010Thumbnail for version as of 04:55, 1 June 2010640 × 416 (171 KB)HarDNox (talk | contribs){{Information |Description={{en|These rare-earth oxides are used as tracers to determine which parts of a watershed are eroding. Clockwise from top center: praseodymium, cerium, lanthanum, neodymium, samarium, and gadolinium.<br/> [[:en:Category:lanthanid

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