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1988
Hinrichsen, Don. "Parks in Peril: On a Clear Day, You Can't See Forever Anymore." The Amicus Journal 10, no. 1 (1988): 3-5.
Zedaker, Shephard M., Niki Stephanie Nicholas, Christopher C. Eagar, Peter S. White, and Thomas E. Burk. Stand Characteristics Associated with Potential Decline of Spruce-Fir Forests in the Southern Appalachians In Proceedings of the US/FRG Research Symposium: Effects of Atmospheric Pollutants on the Spruce-Fir Forests of the Eastern United States and the Federal Republic of Germany. Burlington, VT: U.S.D.A. Forest Service, 1988.
1989
Zedaker, Shephard M., Niki Stephanie Nicholas, and Christopher C. Eagar. "Assessment of Forest Decline in the Southern Appalachian Spruce-Fir Forest, USA." In Air Pollution and Forest Decline: Proceedings of the 14th International Meeting for Specialists in Air Pollution Effects on Forest Ecosystems, International Union of Forest Research O, 239-44. Birmensdorf, Switzerland: Eidgenössische Anstalt für das forstliche Versuchswesen, 1989.
Sheppard, L. J., R. I. Smith, and M. G. R. Cannell. "Frost Hardiness of Picea rubens Growing in Spruce Decline Regions of the Appalachians." Tree Physiology 5, no. 1 (1989): 25-37.
Setala, Annamaija, and Pekka Nuorteva. "High Metal Contents Found in Fulico Septica (L.) Wiggers and Some Other Slime Molds (Myxomycetes)." Karstenia 29 (1989): 37-44.
1992
Great Smoky Mountains National Park Cove Mountain: 1989 Gaseous Pollutant and Meteorological Monitoring Annual Data Summary. Denver, Co: U.S. Department of the Interior, National Park Service, 1992.
Great Smoky Mountains National Park Cove Mountain: 1990 Gaseous Pollutant and Meteorological Monitoring Annual Data Summary. Denver, Co: U.S. Department of the Interior, National Park Service, 1992.
Great Smoky Mountains National Park Look Rock: 1989 Gaseous Pollutant and Meteorological Monitoring Annual Data Summary. Denver, Co: National Park Service, 1992.
Great Smoky Mountains National Park Look Rock: 1990 Gaseous Pollutant and Meteorological Monitoring Annual Data Summary. Denver, CO: U.S. Department of the Interior, National Park Service, 1992.
Martin, J. L.. Lichen Monitoring at the Great Smoky Mountains National Park. International Plant and Pollution Research Laboratory, Estonian Academy of Sciences, 1992.
Tjoelker, Mark G., Samuel B. McLaughlin, R. J. DiCosty, Steven E. Lindberg, and R. J. Norby. "Seasonal variation in nitrate reductase activity in needles of high-elevation red spruce trees." Canadian Journal of Forest Research 22, no. 3 (1992): 375-380.
Hacker, David W., James R. Renfro, and Howard S. Neufeld. Sensitivity of Native Plant Species to Elevated Levels of Ozone In Third Annual Southern Appalachian Man and the Biosphere Conference. Gatlinburg, TN: Tennessee Valley Authority, 1992.
1994
National Park Service, and Nicki Macfarland. Abstracts of the Nineteenth Annual Scientific Research Meeting In Annual Scientific Research Meeting-National Park Service, Southeast Region. Gatlingburg, TN: U.S. Department of the Interior, National Park Service, 1994.
Shaver, Christine L., Kathy A. Tonnessen, and Tonnie G. Maniero. "Clearing the Air at Great Smoky Mountains National Park." Ecological Applications 4, no. 4 (1994): 690-701.

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