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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Roedner, Beverly J. - Hamilton, David A. - Evans, Keith E. - North Central Forest Experiment Station (Saint Paul, Minn.)
    Publication info: St. Paul, Minn, North Central Forest Experiment Station, Forest Service, U.S.D.A, 1978
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Evans, Keith E. - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
    Publication info: Fort Collins, Colo, Rocky Mountain Forest and Range Experiment Station, [1997]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library