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  1. By: Riddell, J. A.
    Publication info: London, W. Scott Publishing Co, 1909
    Holding Institution: University of California Libraries
  2. By: Riddell, J. A. - Schenbeck, Greg L. - O'Rourke, James T. - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
    Publication info: Fort Collins, Colo, The Station, [1997]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  1. By: Fitzner, Richard E. - Rogers, L E - Riddell, J. A.
    Type: Article
    In: Raptor research
    Volume: 11
    Issue: 3
    Date: 1977
    Page Range: 67--71
    Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]