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RT @USGS: In related science, here is a #USGS publication on nitrates in Midwest streams from corn fields, etc. https://t.co/MOLIeyuGZd
RT @USGS: In related science, here is a #USGS publication on nitrates in Midwest streams from corn fields, etc. https://t.co/MOLIeyuGZd
RT @USGS: In related science, here is a #USGS publication on nitrates in Midwest streams from corn fields, etc. https://t.co/MOLIeyuGZd
In related science, here is a #USGS publication on nitrates in Midwest streams from corn fields, etc. https://t.co/EVh9I9H0EO
In related science, here is a #USGS publication on nitrates in Midwest streams from corn fields, etc. https://t.co/sEy0iD0G7X