@article {58, title = {Fluoride. In: Recognition of Air Pollutant Injury to Vegetation: A Pictorial Atlas. 2nd Edition}, year = {1998}, pages = {pp 4-1 to 4-27}, institution = {Air \& Waste Management Association}, address = {Pittsburgh, PA}, author = {Weinstein, L.H. and Davison, A.W. and Arndt, U.} }