TY - JOUR T1 - Abstract JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 299 LP - 299 DO - 10.48044/joa.1980.6.11.299 VL - 6 IS - 11 A2 - , Y1 - 1980/11/01 UR - http://auf.isa-arbor.com/content/6/11/299.abstract ER -