PT - JOURNAL ARTICLE ED - , TI - Abstract AID - 10.48044/joa.1984.10.1.20 DP - 1984 Jan 01 TA - Arboriculture & Urban Forestry (AUF) PG - 20--20 VI - 10 IP - 1 4099 - http://auf.isa-arbor.com/content/10/1/20.short 4100 - http://auf.isa-arbor.com/content/10/1/20.full SO - JOA1984 Jan 01; 10