300 dpi: (d1320-1.jpg)
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 Image Number D1320-1 |
Junior Cesar Avanzi, visiting scientist from the Federal University of Lavras, Brazil, collects sediment to assess the level of erosion control from the use of gypsum-polyacrylamide (PAM) pellets. In the background, Darrell Norton controls the rainfall simulator.
Photo by Peggy Greb.
