TY - JOUR T1 - Abstract JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 90 LP - 90 DO - 10.48044/joa.1975.1.5.90 VL - 1 IS - 5 A2 - , Y1 - 1975/05/01 UR - http://auf.isa-arbor.com/content/1/5/90.abstract ER -