RT Journal Article SR Electronic T1 Legal Protection for Trees in Britain and Ireland JF Arboriculture & Urban Forestry (AUF) FD International Society of Arboriculture SP 306 OP 312 DO 10.48044/jauf.1991.068 VO 17 IS 11 A1 O’Callaghan, D.P. YR 1991 UL http://auf.isa-arbor.com/content/17/11/306.abstract AB