@article {2990,
	title = {Lead in Vegetation, Forest Floor, and Soils of the Great Smoky Mountains National Park},
	journal = {Environment International},
	volume = {13},
	year = {1987},
	note = {Maps},
	pages = {235-246},
	keywords = {Air particles -- Deposition -- Heavy metals, Forests, Plant succession control, Pollution, Soils},
	author = {Bogle, Mary Anna and Turner, Ralph R and Baes, Charles F}
}
@article {4726,
	title = {Lead in Vegetation, Forest Floor Material, and Soils of the Spruce-Fir Zone, GSMNP },
	year = {1984},
	month = {November},
	pages = {211-224},
	institution = {Uplands Field Research Laboratory},
	address = {Gatlinburg, TN},
	keywords = {Land pollution, Soils, Spruce-Fir forests, Vegetation monitoring},
	issn = {SER - 71},
	url = {http://ia601506.us.archive.org/0/items/southernappalach00whit/southernappalach00whit.pdf},
	author = {Bogle, Mary Anna and Turner, Ralph R}
}
