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.
640 pixels wide: (k11313-13.jpg)
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