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Journal Article
Adams, Harold S., Steven L. Stephenson, T. J. Blasing, and D. N. Duvick. "Growth-trend Declines of Spruce and Fir in Mid-Appalachian Subalpine Forests." Environmental and Experimental Botany 25, no. 4 (1985): 315-325.
Scientific Report
Adams, Harold S., Samuel B. McLaughlin, T. J. Blasing, and D. N. Duvick. A Survey of Radial Growth Trends in Spruce in the Great Smoky Mountains National Park as Influenced by Topography, Age, and Stand Development. Oak Ridge National Laboratory: U.S. Department of Energy, 1990.