PT - JOURNAL ARTICLE ED - , TI - Abstract AID - 10.48044/joa.1975.1.7.136 DP - 1975 Jul 01 TA - Arboriculture & Urban Forestry (AUF) PG - 136--136 VI - 1 IP - 7 4099 - http://auf.isa-arbor.com/content/1/7/136.short 4100 - http://auf.isa-arbor.com/content/1/7/136.full SO - JOA1975 Jul 01; 1