@article {2979,
	title = {Bark Factors Affecting the Distribution of Corticolous Bryophytic Communities},
	journal = {The American Midland Naturalist},
	volume = {20},
	year = {1938},
	note = {Illustrations, Maps},
	month = {September},
	pages = {302-330},
	keywords = {Flora, Liverworts, Mosses, Trees},
	author = {Billings, W. D and Drew, William B}
}
@article {2417,
	title = {Notes on Aster in Eastern Tennessee},
	journal = {Castanea: The Journal of the Southern Appalachian Botanical Club},
	volume = {2},
	year = {1937},
	pages = {75-81},
	keywords = {Flora -- Classification and description, Flowering plants},
	author = {Drew, William B}
}
@article {2423,
	title = {Winter Key to the Trees of Eastern Tennessee},
	journal = {The Journal of the Southern Appalachian Botanical Club},
	volume = {2},
	year = {1937},
	pages = {29-44},
	keywords = {Trees -- Classification and description},
	author = {Billings, W. D and Cain, Stanley A and Drew, William B}
}
