@article {57, editor = {,}, title = {Abstract}, volume = {1}, number = {3}, pages = {57--57}, year = {1975}, doi = {10.48044/joa.1975.1.3.57}, publisher = {Arboriculture \& Urban Forestry (AUF)}, issn = {1935-5297}, URL = {https://auf.isa-arbor.com/content/1/3/57}, eprint = {https://auf.isa-arbor.com/content/1/3/57.full.pdf}, journal = {Arboriculture \& Urban Forestry (AUF)} }