TY - JOUR T1 - Abstracts JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 83 LP - 83 DO - 10.48044/joa.1989.15.4.83 VL - 15 IS - 4 A2 - , Y1 - 1989/04/01 UR - http://auf.isa-arbor.com/content/15/4/83.abstract N2 - ER -