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Created page with "{ "USGS Publications Warehouse": { "@context": "https://schema.org", "@type": "Article", "additionalType": "Journal Article", "name": "Nitrate in groundwater of the United States, 1991-2003", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "70007513", "url": "https://pubs.usgs.gov/publication/70007513" }, { "@type": "PropertyValue",..."