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By: Henrich, James EType: ArticleIn: Exploring the arboretum : magazine for the members of the Los Angeles County Arboretum and Botanic GardenVolume: 2014:summer/fallSeries:Issue:Date: 2014Page Range: 13Publication Info: Arcadia, Los Angeles Arboretum Foundation, [200-?]Subjects: Canker (Plant disease) Insect pests -- California