RT Journal Article SR Electronic T1 Abstract JF Arboriculture & Urban Forestry (AUF) JO JOA FD International Society of Arboriculture SP 98 OP 98 DO 10.48044/joa.1988.14.4.98 VO 14 IS 4 YR 1988 UL http://auf.isa-arbor.com/content/14/4/98.abstract AB