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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number D033-2

Soil scientists Patrick Hunt (left), Matias Vanotti (center), and Ariel Szogi examine a sample of calcium phosphate produced by the wastewater treatment system.

Photo by Maria Cruz Garcia.



640 pixels wide: (D033-2.jpg)




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Last Modified: 5/23/2006
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