RT Journal Article SR Electronic T1 Yellow Leaves Set Off Trees and Shrubs JF Arboriculture & Urban Forestry (AUF) JO JOA FD International Society of Arboriculture SP 200 OP 200 DO 10.48044/jauf.1976.049 VO 2 IS 10 A1 Ray Rothenberger YR 1976 UL http://auf.isa-arbor.com/content/2/10/200.abstract