@article {12015,
	title = {Great Smoky Mountains National Park Visitors Road and Trail Usage Analysis},
	year = {1974},
	note = {This Analysis consists of Part I and Part II.},
	pages = {103 and 91},
	publisher = {National Park Service},
	keywords = {Camping, Data and statistics, Roads, Tourism, Trails},
	author = {National Aeronautics and Space Administration}
}
