PT - JOURNAL ARTICLE ED - , TI - Abstract AID - 10.48044/joa.1975.1.4.74 DP - 1975 Apr 01 TA - Arboriculture & Urban Forestry (AUF) PG - 74--74 VI - 1 IP - 4 4099 - http://auf.isa-arbor.com/content/1/4/74.short 4100 - http://auf.isa-arbor.com/content/1/4/74.full SO - JOA1975 Apr 01; 1