PT - JOURNAL ARTICLE ED - , TI - Abstract AID - 10.48044/joa.1975.1.2.34 DP - 1975 Feb 01 TA - Arboriculture & Urban Forestry (AUF) PG - 34--34 VI - 1 IP - 2 4099 - http://auf.isa-arbor.com/content/1/2/34.short 4100 - http://auf.isa-arbor.com/content/1/2/34.full SO - JOA1975 Feb 01; 1