RT Journal Article SR Electronic T1 Planning And Implementing A Tree Health Care Practice JF Arboriculture & Urban Forestry (AUF) JO JOA FD International Society of Arboriculture SP 265 OP 268 DO 10.48044/jauf.1986.057 VO 12 IS 11 A1 David G. Nielsen YR 1986 UL http://auf.isa-arbor.com/content/12/11/265.abstract AB