TY - JOUR T1 - Abstract JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 211 LP - 211 DO - 10.48044/joa.1975.1.11.209 VL - 1 IS - 11 A2 - , Y1 - 1975/11/01 UR - http://auf.isa-arbor.com/content/1/11/211.abstract N2 - ER -