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By:Type: ArticleIn: LASCA miscellaneaVolume: 5Series:Issue:Date: 1957Page Range: 11-17Publication Info: Arcadia, Los Angeles State and County Arboretum ; Prepared for distribution by California Arboretum Foundation, Inc, 1953-Subjects: Bourne, Francis H. Los Angeles State and County Arboretum -- Maps Plant introduction -- California -- Law and Legisl Thomas, Charles Woolley, Donald P.