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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Noble, D.L. - Edminster, C.B. - Shepperd, W.D. - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Noble, D.L. - Edminster, C.B. - Shepperd, W.D.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Bennett, D. D. - Schmid, J. M. - Mata, S.A. - Edminster, C.B.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library