TY - JOUR T1 - Abstract JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 106 LP - 106 DO - 10.48044/joa.1975.1.6.106 VL - 1 IS - 6 A2 - , Y1 - 1975/06/01 UR - http://auf.isa-arbor.com/content/1/6/106.abstract ER -