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History
- Published online July 1, 2002.
Copyright & Usage
© 2002, International Society of Arboriculture. All rights reserved.
Author Information
- 1Horticulturist, U.S. National Arboretum, USDA-ARS, 3501 New York Ave., N.E., Washington, DC 20002, U.S.
- 2Research Geneticist, U.S. National Arboretum, USDA-ARS, 3501 New York Ave., N.E., Washington, DC 20002, U.S.
- ↵*Corresponding author: S.E. Bentz.