RT Journal Article SR Electronic T1 How a National Association and Its Chapters can Avoid Legal Pitfalls JF Arboriculture & Urban Forestry (AUF) JO JOA FD International Society of Arboriculture SP 77 OP 79 DO 10.48044/jauf.1980.020 VO 6 IS 3 A1 William I. Althen YR 1980 UL http://auf.isa-arbor.com/content/6/3/77.abstract AB