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1978
Whittaker, Paul L., and Susan Power Bratton. A Comparison of Surface Impact By Hiking and Horseback Riding on Four Trail Surfaces in Great Smoky Mountains National Park In Management Report. Gatlinburg, TN: U.S. Department of the Interior, National Park Service , 1978.
1977
Bratton, Susan Power, Matthew G. Hickler, and James H. Graves. Trail and Campsite Erosion Survey for Great Smoky Mountains National Park Part VI: The Description of Individual Trails In Research/resources Management Report; no. 16. Gatlinburg, Tenn.: Uplands Field Research Laboratory, Great Smoky Mountains National Park , 1977.
1975
F. Borden, Yates, Brian J. Turner, and Hugh A. Devine. Back-country Data Collection System for the Great Smoky Mountains National Park In Progress Report. The Pennsylvania State University Cooperative Park Studies Unit, 1975.
1971
Guidelines: Appalachian Trail : National Scenic Trail, Maine to Georgia. Washington, DC: U. S. Department of the Interior, National Park Service , 1971.