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1985
Turner, Ralph R., Mary Anna Bogle, and Charles F. Baes. 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.
1984
Bogle, Mary Anna, and Ralph R. Turner. Lead in Vegetation, Forest Floor Material, and Soils of the Spruce-Fir Zone, GSMNP In The Southern Appalachian Spruce-Fir Ecosystem: Its Biology and Threats. Gatlinburg, TN: Uplands Field Research Laboratory, 1984.