TY - JOUR T1 - Abstracts JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 41 LP - 41 DO - 10.48044/joa.1990.16.2.41 VL - 16 IS - 2 A2 - , Y1 - 1990/02/01 UR - http://auf.isa-arbor.com/content/16/2/41.abstract N2 - ER -