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History
- Published online May 1, 2008.
Copyright & Usage
© 2008, International Society of Arboriculture. All rights reserved.
Author Information
- Tyler R. Stevenson, 1624 North Coast Highway, #25, Encinitas, CA 92024, U.S., Tyler219{at}gmail.com
- Henry D. Gerhold (corresponding author), Professor of Forest Genetics, 333 Forest Resources Building, Penn State University, University Park, PA 16802, U.S., hdg{at}psu.edu
- William F. Elmendorf, Assistant Professor of Urban and Community Forestry, 334 Forest Resources Building, Penn State University, University Park, PA 16802, U.S., wfe1{at}psu.edu