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United States Department of Agriculture

Agricultural Research Service

Image Number D2243-2

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Image Number D2243-2

ARS soil scientist April Leytem and research leader David Bjorneberg use open-path ultraviolet-differential optical absorption spectrometry to determine ammonia concentrations at dairy operations in southern Idaho.


Photo by Peggy Greb.

640 pixels wide: (d2243-2.jpg)

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Last Modified: 6/27/2011
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