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United States Department of Agriculture

Agricultural Research Service

Image Number D1623-4

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Image Number D1623-4

Biological science technician Chad Rollofson (left) and soil scientist Jane Johnson weigh soil samples for analysis to determine how soil carbon and other chemical properties are changing due to management over time.


Photo by Stephen Ausmus.

640 pixels wide: (d1623-4.jpg)

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Last Modified: 11/19/2009
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