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Please read BHL's Acknowledgment of Harmful Content
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  1. Type: Article
    In: Garden
    Volume: 11
    Issue: 4
    Date: 1987
    Page Range: 1-2
    Publication Info: [New York, Garden Society], 1977-
    Subjects: California. Department of Transportation  Express highways -- California  Roadside plants -- California  
  2. Type: Article
    In: Arboreta and botanic gardens : a publication of the Los Angeles County Department of Arboreta and Botanic Gardens
    Volume: 2
    Issue: 4
    Date: 1990
    Page Range: 5
    Publication Info: Arcadia, CA, California Arboretum Foundation, 1989-
    Subjects: California. Department of Transportation  Environmental education -- California -- Los Angel  Environmental education -- Exhibitions  Oak Tree Foundation