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United States Department of Agriculture

Agricultural Research Service

Image Number D1621-5

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Image Number D1621-5

Using closed-vented chambers, biological science aide Rochelle Jansen (right) and soil scientist Jane Johnson collect gas emissions from soil at a research farm. Samples will be analyzed for carbon dioxide, nitrous oxide, and methane.

 

Photo by Stephen Ausmus.


640 pixels wide: (d1621-5.jpg)




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Last Modified: 11/6/2013
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