TY - JOUR T1 - Abstracts JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 71 LP - 71 DO - 10.48044/joa.1989.15.3.71 VL - 15 IS - 3 A2 - , Y1 - 1989/03/01 UR - http://auf.isa-arbor.com/content/15/3/71.abstract N2 - ER -