RT Journal Article SR Electronic T1 The Future and its Impact on the Tree Care Profession in Canada JF Arboriculture & Urban Forestry (AUF) JO JOA FD International Society of Arboriculture SP 81 OP 83 DO 10.48044/jauf.1993.015 VO 19 IS 2 A1 Tom Lee YR 1993 UL http://auf.isa-arbor.com/content/19/2/81.abstract AB