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Filters: Keyword is Trees -- Classification and description and Author is Billings, W. D  [Clear All Filters]
Journal Article
Oosting, H. J., and W. D. Billings. "A Comparison of Virgin Spruce-Fir Forest in the Northern and Southern Appalachian System." Ecology 32, no. 1 (1951): 84-103.
Billings, W. D., Stanley A. Cain, and William B. Drew. "Winter Key to the Trees of Eastern Tennessee." The Journal of the Southern Appalachian Botanical Club 2, no. 3 (1937): 29-44.