PT - JOURNAL ARTICLE ED - , TI - Abstracts AID - 10.48044/joa.1989.15.2.50 DP - 1989 Feb 01 TA - Arboriculture & Urban Forestry (AUF) PG - 50--50 VI - 15 IP - 2 4099 - http://auf.isa-arbor.com/content/15/2/50.short 4100 - http://auf.isa-arbor.com/content/15/2/50.full SO - JOA1989 Feb 01; 15