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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Courter, J. W. - University of Illinois at Urbana-Champaign. Cooperative Extension Service.
    Edition: Rev. April, 1981.
    Publication info: [Urbana, Ill.], University of Illinois at Urbana-Champaign, College of Agriculture, Cooperative Extension Service, [1981]
    Holding Institution: University Library, University of Illinois Urbana Champaign