TY - JOUR T1 - Illinois Arborist Certification JF - Arboriculture & Urban Forestry (AUF) SP - 48 LP - 50 DO - 10.48044/jauf.1985.012 VL - 11 IS - 2 AU - R. Hendricksen John Y1 - 1985/02/01 UR - http://auf.isa-arbor.com/content/11/2/48.abstract ER -