PT - JOURNAL ARTICLE ED - , TI - Abstract AID - 10.48044/joa.1987.13.6.153 DP - 1987 Jun 01 TA - Arboriculture & Urban Forestry (AUF) PG - 153--153 VI - 13 IP - 6 4099 - http://auf.isa-arbor.com/content/13/6/153.short 4100 - http://auf.isa-arbor.com/content/13/6/153.full SO - JOA1987 Jun 01; 13