TY - JOUR T1 - A Progressive Approach in Production Improvement For Tree Trimming JF - Arboriculture & Urban Forestry (AUF) SP - 53 LP - 56 DO - 10.48044/jauf.1982.013 VL - 8 IS - 2 AU - Stephen M. Genua Y1 - 1982/02/01 UR - http://auf.isa-arbor.com/content/8/2/53.abstract N2 - ER -