PT - JOURNAL ARTICLE ED - , TI - Abstract AID - 10.48044/joa.1975.1.09.175a DP - 1975 Sep 01 TA - Arboriculture & Urban Forestry (AUF) PG - 175--175 VI - 1 IP - 9 4099 - http://auf.isa-arbor.com/content/1/9/175.1.short 4100 - http://auf.isa-arbor.com/content/1/9/175.1.full SO - JOA1975 Sep 01; 1