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177259446 (RM)

AGRICULTURAL SOIL RESEARCH

Agricultural soil research. Soil scientists using open-path ultraviolet-differential optical absorption spectrometry to determine ammonia concentrations at a dairy farm in southern Idaho, USA. (KEYSTONE/SCIENCE PHOTO LIBRARY/PEGGY GREB/US DEPARTMENT OF AGRICULTURE)

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COPYRIGHTPFLICHTIG Editorial use only

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Erstellungsdatum

20111026

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Credit

KEYSTONE

Source

SCIENCE PHOTO LIBRARY SPL

Byline

PEGGY GREB/US DEPARTMENT OF AGRICULTURE

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3667 x 2445 px

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