TY - JOUR T1 - Counting on Trees JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 89 LP - 91 DO - 10.48044/jauf.1987.016 VL - 13 IS - 3 AU - Steven Graham Y1 - 1987/03/01 UR - http://auf.isa-arbor.com/content/13/3/89.abstract N2 - ER -