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By: Howard, AllenType: ArticleIn: Arboreta and botanic gardens : a publication of the Los Angeles County Department of Arboreta and Botanic GardensVolume: 2Series:Issue: 3Date: 1990Page Range: 6-8Publication Info: Arcadia, CA, California Arboretum Foundation, 1989-Subjects: Botany -- Databases Horticulture -- Databases