TY - JOUR T1 - Abstract JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 80 LP - 80 DO - 10.48044/joa.1975.1.4.80 VL - 1 IS - 4 A2 - , Y1 - 1975/04/01 UR - http://auf.isa-arbor.com/content/1/4/80.abstract ER -