RT Journal Article SR Electronic T1 A New System Developed for Guying Trees JF Arboriculture & Urban Forestry (AUF) JO JOA FD International Society of Arboriculture SP 121 OP 123 DO 10.48044/jauf.1979.029 VO 5 IS 6 A1 Jeffers, William A. A1 Abbott, Richard E. YR 1979 UL http://auf.isa-arbor.com/content/5/6/121.abstract AB