@article {4997,
	title = {Back-country Data Collection System for the Great Smoky Mountains National Park},
	year = {1975},
	month = {May 6},
	institution = {The Pennsylvania State University Cooperative Park Studies Unit},
	keywords = {Conservation -- Trails, Trail erosion, Trail maintenance, Trails},
	isbn = {4},
	url = {http://diglib.lib.utk.edu/dotsdata/Borden_Back-CountryDataCollectionSystem1975.pdf},
	author = {Borden, F. Yates and Turner, Brian J and Devine, Hugh A}
}
