TY - JOUR T1 - Abstract JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 144 LP - 144 DO - 10.48044/joa.1987.13.5.144 VL - 13 IS - 5 A2 - , Y1 - 1987/05/01 UR - http://auf.isa-arbor.com/content/13/5/144.abstract N2 - ER -