Shortleaf research, newspaper articles, fact sheets, conference proceedings, literature reviews, and brochures.
North America![]() Young, J. A., Young C. G. (1992). Seeds of Woody Plants in North America: Revised and Enlarged Edition. Dioscorides Press, Portland ![]() Alden, H. A. (1997). Softwoods of North America. Forest Products Laboratory, General Technical Report GTR-102. Retrieved from
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