TY - JOUR T1 - “Credo in Arbores…” JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 44 LP - 50 DO - 10.48044/jauf.1989.010 VL - 15 IS - 2 AU - Donald C. Willeke Y1 - 1989/02/01 UR - http://auf.isa-arbor.com/content/15/2/44.abstract N2 - ER -