@article {6076,
	title = {Trace Metal Uptake and Accumulation in Trees as Affected by Environmental Pollution},
	year = {Undated},
	institution = {Oak Ridge National Laboratory, National Park Service, U. S. Department of the Interior},
	address = {Oak Ridge, TN},
	keywords = {Forests, Pollution, Sediments -- Heavy metals},
	issn = {Environmental Sciences Division, Publication 2571},
	author = {Baes, Charles F and McLaughlin, Samuel B}
}
@article {4984,
	title = {Radial trends in cation ratios in tree rings as indicators of the impact of atmospheric deposition on forests},
	journal = {Canadian Journal of Forest Research},
	volume = {19},
	year = {1989},
	note = {Tables},
	pages = {556-594},
	publisher = {NRC Research Press},
	address = {Ottawa, Ontario, Canada},
	keywords = {Climate, Hemlocks, Red spruce, Soils},
	author = {Bondietti, E A and Baes, Charles F and McLaughlin, Samuel B}
}
@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 {6176,
	title = {Survey of Lead in Vegatation, Forest Floor, and Soila of the Great Smoky Mountains National Park},
	year = {1985},
	note = {Full-text at Park Library.  },
	month = {August},
	institution = {Oak Ridge National Laboratory },
	address = {Oak Ridge, TN},
	keywords = {Land pollution, Pollution, Sediments -- Heavy metals},
	issn = {no. 2425},
	author = {Turner, Ralph R and Bogle, Mary Anna and Baes, Charles F}
}
@article {4667,
	title = {Trace Elements in Tree Rings: Evidence of Recent and Historical Air Pollution},
	journal = {Science},
	volume = {224},
	year = {1984},
	month = {May},
	pages = {494-497},
	keywords = {Air particles -- Deposition -- Heavy metals, Flora, Pollution, Trees, Trees -- Growth},
	author = {Baes, Charles F and McLaughlin, Samuel B}
}
