TY - JOUR T1 - Abstract JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 288 LP - 288 DO - 10.48044/joa.1990.16.11.288 VL - 16 IS - 11 A2 - , Y1 - 1990/11/01 UR - http://auf.isa-arbor.com/content/16/11/288.abstract N2 - ER -