PT - JOURNAL ARTICLE ED - , TI - Abstract AID - 10.48044/joa.1988.14.1.6 DP - 1988 Jan 01 TA - Arboriculture & Urban Forestry (AUF) PG - 6--6 VI - 14 IP - 1 4099 - http://auf.isa-arbor.com/content/14/1/6.short 4100 - http://auf.isa-arbor.com/content/14/1/6.full SO - JOA1988 Jan 01; 14