TY - JOUR T1 - Abstracts JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 176 LP - 176 DO - 10.48044/joa.1989.15.7.176 VL - 15 IS - 7 A2 - , Y1 - 1989/07/01 UR - http://auf.isa-arbor.com/content/15/7/176.abstract N2 - ER -