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United States Department of Agriculture

Agricultural Research Service

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Image Number K11313-13

Investigating the chemical nature of organic matter in a rice soil, chemist Klaus Schmidt-Rohr (front) and soil scientist Dan Olk (middle) examine a spectrum acquired through NMR spectroscopy. In the background, chemist Jingdong Mao loads a sample into the spectrometer.

Photo by Stephen Ausmus.

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Last Modified: 8/12/2016
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