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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Lloyd, John. - International Society of Arboriculture. - University of Illinois at Urbana-Champaign. Cooperative Extension Service.
    Publication info: [Urbana, Ill.], Cooperative Extension Service, College of Agricultural, Consumer and Environmental Sciences, University of Illinois at Urbana-Champaign, c1997
    Holding Institution: University Library, University of Illinois Urbana Champaign