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High Elevation Outcrops and Barrens of the Southern Appalachian Mountains." In Savannas, Barrens, and Rock Outcrop Plant Communities of North America, edited by R. C. Anderson, J. S. Fralish and J. M. Baskin, 119-132. Cambridge: Cambridge University Press, 1999.
"Predicting Treeline Elevation in the Southern Appalachians." Castanea 62, no. 3 (1997): 137-146.
"High Elevation Rock outcrop Vegetation of the Southern Appalachian Mountains." Journal of Vegetation Science 7, no. 5 (1996): 703-722.
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