TY - JOUR T1 - Abstract JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 187 LP - 187 DO - 10.48044/joa.1975.1.10.187 VL - 1 IS - 10 A2 - , Y1 - 1975/10/01 UR - http://auf.isa-arbor.com/content/1/10/187.abstract N2 - ER -