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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Rudolph, Thomas D., - North Central Forest Experiment Station (Saint Paul, Minn.). Institute of Forest Genetics.
    Publication info: Rhinelander, Wis, Institute of Forest Genetics, North Central Forest Experiment Station, Forest Service, U.S.D.A, 1974
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library