title: The National Atmospheric Deposition Program: 25 years of monitoring in support of science and policy: an ammonia workshop: the state of science and future needs.
authors.forename: James A
authors.initials: JA
authors.lastname: Lynch
authors.forename: Margaret
authors.initials: M
authors.lastname: Kerchner
mesh_terms: D000393:Air Pollutants / Q000032:analysis* / Q000633:toxicity; D000641:Ammonia / Q000032:analysis* / Q000633:toxicity; D001272:Atmosphere / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods; D009584:Nitrogen / Q000032:analysis* / Q000633:toxicity; D014481:United States
chemical_list: D000393:Air Pollutants; D000641:Ammonia; D009584:Nitrogen