USGS Multimedia Gallery
Title: USGS Scientist at Work
Description: Brent Knights and Jon Vallazza conduct a river productivity study aboard the E.D. Cope, Upper Mississippi River System.
Location: MI, USA
Photographer: Mike Caucutt , U.S. Geological Survey
Usage: This image is public domain/of free use unless otherwise stated. Please refer to the USGS Copyright section for how to credit the photo.
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