TY - JOUR T1 - Identifying the Sophistication Levels in an IPM Philosophy JF - Arboriculture & Urban Forestry (AUF) SP - 117 LP - 119 DO - 10.48044/jauf.1991.033 VL - 17 IS - 5 AU - Paul D. Marsan AU - Brian Hanson Y1 - 1991/05/01 UR - http://auf.isa-arbor.com/content/17/5/117.abstract N2 - ER -