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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number K11427-2

With a GPS unit strapped to his all-terrain vehicle, agricultural engineer Roger Eigenberg tows a sled with an electromagnetic geoconductivity meter attached to measure soil conductivity.

Photo by Stephen Ausmus.



640 pixels wide: (k11427-2.jpg)




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Last Modified: 5/23/2006
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