PT - JOURNAL ARTICLE ED - , TI - Abstracts AID - 10.48044/joa.1989.15.1.21a DP - 1989 Jan 01 TA - Arboriculture & Urban Forestry (AUF) PG - 21--21 VI - 15 IP - 1 4099 - http://auf.isa-arbor.com/content/15/1/21.2.short 4100 - http://auf.isa-arbor.com/content/15/1/21.2.full SO - JOA1989 Jan 01; 15