RT Journal Article SR Electronic T1 How to Develop or Improve Your Line Clearing Program JF Arboriculture & Urban Forestry (AUF) FD International Society of Arboriculture SP 329 OP 332 DO 10.48044/jauf.1981.076 VO 7 IS 12 A1 Johns, Hyland R. A1 Holewinski, Dennis E. YR 1981 UL http://auf.isa-arbor.com/content/7/12/329.abstract AB