TY - JOUR T1 - Abstract JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 34 LP - 34 DO - 10.48044/joa.1975.1.2.34 VL - 1 IS - 2 A2 - , Y1 - 1975/02/01 UR - http://auf.isa-arbor.com/content/1/2/34.abstract ER -