TY - JOUR T1 - The Utility Crew Supervisor JF - Arboriculture & Urban Forestry (AUF) SP - 139 LP - 140 DO - 10.48044/jauf.1981.033 VL - 7 IS - 5 AU - Willard L. Grubb Y1 - 1981/05/01 UR - http://auf.isa-arbor.com/content/7/5/139.abstract ER -