TY - JOUR T1 - Abstracts JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 43 LP - 43 DO - 10.48044/joa.1989.15.2.43 VL - 15 IS - 2 A2 - , Y1 - 1989/02/01 UR - http://auf.isa-arbor.com/content/15/2/43.abstract ER -