RT Journal Article SR Electronic T1 Arboricultural Abstracts JF Arboriculture & Urban Forestry (AUF) JO JOA FD International Society of Arboriculture SP 250 OP 251 DO 10.48044/joa.2003.29.4.250 VO 29 IS 4 YR 2003 UL http://auf.isa-arbor.com/content/29/4/250.abstract AB