pl23_fizh1773.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23fizh1773jpgDescription
Dr. M. M. Ellis, in charge of Interior Fisheries Investigations, making carefulphysiological measurements, has helped show why waters polluted with industrialor municipal wastes kill fish, and have established minimum concentrationswhich are lethal to aquatic life.
Credit
NOAA Central Library Historical Fisheries Collection
Collection
Historic Fisheries