@article {252, editor = {,}, title = {Abstract}, volume = {16}, number = {9}, pages = {252--252}, year = {1990}, doi = {10.48044/joa.1990.16.9.252}, publisher = {Arboriculture \& Urban Forestry (AUF)}, issn = {1935-5297}, URL = {https://auf.isa-arbor.com/content/16/9/252}, eprint = {https://auf.isa-arbor.com/content/16/9/252.full.pdf}, journal = {Arboriculture \& Urban Forestry (AUF)} }