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Lichen Inventory for Proposed Big Cove Land Exchange. Washington, DC: Department of Systematic Biology -- Botany, National Museum of Natural History, Smithsonian Institution, 2001.
Southern Appalachian Lichens: An Indexed Bibliography. University of Tennessee, 1983.
Southern Appalachian Lichens: An Indexed Bibliography In Research/Resources Management Report. Uplands Field Research Laboratory, 1983.