RT Journal Article SR Electronic T1 A Need for Urban IPM JF Arboriculture & Urban Forestry (AUF) FD International Society of Arboriculture SP 204 OP 207 DO 10.48044/jauf.1981.050 VO 7 IS 8 A1 Walker, J.T. YR 1981 UL http://auf.isa-arbor.com/content/7/8/204.abstract AB