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United States Department of Agriculture

Agricultural Research Service

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Image Number D1321-1

Technician Brenda Hoffman and Samuel Beskow, visiting scientist from the Federal University of Lavras, Brazil, collect sediment to quantify effectiveness of erosion control obtained with pelletized gypsum and polyacrylamide.


Photo by Peggy Greb.

640 pixels wide: (d1321-1.jpg)

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Last Modified: 8/13/2016
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