TY - JOUR T1 - Some New Ideas in Tree Care JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 234 LP - 237 DO - 10.48044/jauf.1975.059 VL - 1 IS - 12 AU - Alex L. Shigo Y1 - 1975/12/01 UR - http://auf.isa-arbor.com/content/1/12/234.abstract N2 - ER -