TY - JOUR T1 - Abstract JF - Arboriculture & Urban Forestry (AUF) SP - 54 LP - 54 DO - 10.48044/joa.1977.3.3.54 VL - 3 IS - 3 A2 - , Y1 - 1977/03/01 UR - http://auf.isa-arbor.com/content/3/3/54.abstract N2 - ER -