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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Doverspike, George E. - Rettie, James C. (James Cardno), - Camp, Harry W. - Northeastern Forest Experiment Station (Radnor, Pa.)
    Publication info: Upper Darby, Pa, Northeastern Forest Experiment Station, [1951]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library