TY - JOUR T1 - Isa Texas Chapter Proposed Certification Program JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 143 LP - 146 DO - 10.48044/jauf.1985.032 VL - 11 IS - 5 AU - Sue B. Simpson Y1 - 1985/05/01 UR - http://auf.isa-arbor.com/content/11/5/143.abstract N2 - ER -