TY - JOUR T1 - Keeping America Natural JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 96 LP - 97 DO - 10.48044/jauf.1976.023 VL - 2 IS - 5 AU - Charles R. Montgomery Y1 - 1976/05/01 UR - http://auf.isa-arbor.com/content/2/5/96.abstract ER -