PT - JOURNAL ARTICLE AU - Manion, Paul D. TI - Norway Maple Decline AID - 10.48044/jauf.1981.010 DP - 1981 Feb 01 TA - Arboriculture & Urban Forestry (AUF) PG - 38--42 VI - 7 IP - 2 4099 - http://auf.isa-arbor.com/content/7/2/38.short 4100 - http://auf.isa-arbor.com/content/7/2/38.full AB - Norway maple deterioration in urban areas is a major problem. An array of tree characteristics, site factors, climatic factors, and biotic factors are involved in the deterioration in a decline type syndrome.