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Date: 2016-02-01 14:51:29Chemistry Nitrogen cycle Industrial gases Nitrates Ammonia Toxicology Urea Fertilizer Ammonium nitrate Nitrogen Dead zone Ammonium sulfate | Mineral Commodity Summaries 2016Add to Reading ListSource URL: minerals.usgs.govDownload Document from Source WebsiteFile Size: 27,48 KBShare Document on Facebook |