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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Pennsylvania Chestnut Blight Conference Harrisburg, Pa.) - Pearson, Raymond Allen, - Pennsylvania. Chestnut Tree Blight Commission.
    Publication info: Harrisburg, C.E. Aughinbaugh, Printer to the State of Pennsylvania, 1912
    Holding Institution: University of Toronto - Gerstein Science Information Centre