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Trace Metal Uptake and Accumulation in Trees as Affected by Environmental Pollution. Oak Ridge, TN: Oak Ridge National Laboratory, National Park Service, U. S. Department of the Interior, Undated.
Radial trends in cation ratios in tree rings as indicators of the impact of atmospheric deposition on forests." Canadian Journal of Forest Research 19, no. 5 (1989): 556-594.
"Lead in Vegetation, Forest Floor, and Soils of the Great Smoky Mountains National Park." Environment International 13, no. 3 (1987): 235-246.
"Survey of Lead in Vegatation, Forest Floor, and Soila of the Great Smoky Mountains National Park In Environmental Sciences Division publication. Oak Ridge, TN: Oak Ridge National Laboratory , 1985.
Trace Elements in Tree Rings: Evidence of Recent and Historical Air Pollution." Science 224, no. 4648 (1984): 494-497.
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