title: Comment on "Trend reversal of nitrate in Danish groundwater-a reflection of agricultural practices and nitrogen surpluses since 1950".
authors: Timothy B
authors: TB
authors: Spruill
mesh_terms: D000383:Agriculture / Q000379:methods*; D003718:Denmark; D004784:Environmental Monitoring; D058735:Environmental Policy; D005618:Fresh Water / Q000737:chemistry*; D009566:Nitrates / Q000032:analysis*; D058458:Nitrogen Cycle; D013995:Time; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000032:analysis; D014881:Water Supply
chemical_list: D009566:Nitrates; D014874:Water Pollutants, Chemical