TY - JOUR T1 - Planning And Implementing A Tree Health Care Practice JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 265 LP - 268 DO - 10.48044/jauf.1986.057 VL - 12 IS - 11 AU - David G. Nielsen Y1 - 1986/11/01 UR - http://auf.isa-arbor.com/content/12/11/265.abstract N2 - ER -