TY - JOUR T1 - Abstract JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 6 LP - 6 DO - 10.48044/joa.1988.14.1.6 VL - 14 IS - 1 A2 - , Y1 - 1988/01/01 UR - http://auf.isa-arbor.com/content/14/1/6.abstract ER -