TY - JOUR T1 - Abstract JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 91 LP - 91 DO - 10.48044/joa.1986.12.4.91 VL - 12 IS - 4 A2 - , Y1 - 1986/04/01 UR - http://auf.isa-arbor.com/content/12/4/91.abstract N2 - ER -