@article {29, editor = {,}, title = {Abstract}, volume = {16}, number = {2}, pages = {29--29}, year = {1990}, doi = {10.48044/joa.1990.16.2.29}, publisher = {Arboriculture \& Urban Forestry (AUF)}, issn = {1935-5297}, URL = {https://auf.isa-arbor.com/content/16/2/29}, eprint = {https://auf.isa-arbor.com/content/16/2/29.full.pdf}, journal = {Arboriculture \& Urban Forestry (AUF)} }