00000nas##2200000za#4500 9.505092 CaOODSP 20210929082751 cr ||||||||||| 150406c2006||||xxc|| m o||||f| |0eng|d CaOODSP eng n-cn--- Fo29-31E-PDF Canada. Natural Resources Canada. Canadian Forest Service. Forestry leaflet / [electronic resource] Published by Northern Forestry Centre. Edmonton - Alberta : Natural Resources Canada. Irregular Raises awareness of diseases and pests that can afflict trees. It identifies the affected regions, lists the symptoms, the common damage, and the cause, and offers tips on identification, prevention, and control. It also notes wider efforts to control the problem and briefly assesses the effectiveness in doing so. Dépliant forestier / (CaOODSP)9.501492 Forestry leaflet / (CaOODSP)9.514635