TY - JOUR T1 - Abstract JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 212 LP - 212 DO - 10.48044/joa.1986.12.9.212 VL - 12 IS - 9 A2 - , Y1 - 1986/09/01 UR - http://auf.isa-arbor.com/content/12/9/212.abstract N2 - ER -