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The Appalachians. Boston: Houghton Mifflin, 1965.
Description of the Resources of the Great Smoky Mountains National Park and Their Significance and Limitations on Public Use In Management Library, Great Smoky Mountains National Park. Department of the Interior, National Park Serice, 1975.
Evaluation of Genetic Diversity of Flowering Dogwood. Electronic ed., 2010.
Great Smoky Mountains National Park In Natural History Handbook. Vol. 5. Washington, D.C.: U.S. Government Printing Office, 1961.
Light on the Path: The Anthropology and History of the Southeastern Indians. University of Alabama Press, 2006.
Protecting Biological Diversity in the National Parks: Workshop Recommendations, May 3-5, 1988, Great Smoky Mountains National Park, Gatlinburg, Tennessee In Transactions and Proceedings Series of the United States National Park Service. Washington, D.C.: U.S. Department of the Interior, National Park Service, 1990.
Trees, Shrubs, and Woody Vines of Great Smoky Mountains National Park. Knoxville, TN: University of Tennessee Press, 1964.
Appalachian Adventure: Great Smoky Mountains National Park." In The National Parks: What They Mean to You and Me, 46-51. New York: Knopf, 1951.
"Arlea judithnajtae n. sp. (Collembola: Isotomidae), a temperate North American member of a Gondwanan genus." Zoosystema 39, no. 1 (2017): 87-93.
"Biodiversity gradients in obligate symbiotic organisms: exploring the diversity and traits of lichen propagules across the United States." Journal of Biogeography 43, no. 8 (2016): 1667-1678.
"Biological Monitoring in UNESCO Biosphere Reserves with Special Reference to the Great Smoky Mountains National Park." Biological Conservation 13, no. 2 (1978): 105-114.
"Democratizing evolutionary biology, lessons from insects." Current Opinion in Insect Science (2016).
"Description and Biology of the Sexual Generation of Disholcaspis Quercusmamma (Walsh and Riley) (Hymenoptera: Cynipidae), with Notes on Associated Parasitoids." Proceedings of the Entomological Society of Washington 116, no. 3 (2014): 294-310.
"Distribution of Karyotypes of the Cryptocercus punctulatus Species Complex (Blattodea: Cryptocercidae) in Great Smoky Mountains National Park." Journal of Insect Science 17, no. 3 (2017): 69.
"Ecological genomics of local adaptation in Cornus florida L. by Genotyping by Sequencing." Ecology and Evolution 7, no. 1 (2016): 441-465.
"Ecological monitoring and evidence-based decision-making in America's National Parks: highlights of the Special Feature." Ecosphere 7, no. 11 (2013).
"Ecological Studies in the Great Smoky Mountains." Association of the Southeastern Biologists Bulletin 12, no. 3 (1965): 63-65.
"Evaluating Elastomer Marking and Photo Identification Methods for Terrestrial Salamanders: Marking Effects and Observer Bias." Herpetological Review 35, no. 1 (2004): 38-41.
"Evolution and Measurement of Species Diversity." Taxon 21, no. 2/3 (1972): 213-251.
"A global biodiversity estimate of a poorly known taxon: phylum Tardigrada." Zoological Journal of the Linnean Society 178, no. 4 (2016): 730-736.
"High-elevation Ground-layer Plant Community Composition Across Environmental Gradients in Spruce-Fir Forests." Ecological Research 26, no. 6 (2011): 1089-1101.
"Identification of Nosema bombi Fantham and Porter 1914 (Microsporidia) in Bombus impatiens and Bombus sandersoni from Great Smoky Mountains National Park (USA)." Journal of Invertebrate Pathology 103, no. 1 (2010): 71-73.
"Measuring Biodiversity with Probability." The Mathematics Teacher 107, no. 7 (2014): 547-552.
"A new circumscription for the common and widespread North American species Physcia subtilis, and description of a new species, P. thomsoniana." Opuscula Philolichenum 16 (2017): 139-152.
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