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Hagley, C. A., and D. L- Taylor. 1991. An Approach for Evaluating 

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Jones, W. E. , D. U. Palawski, and J. C. Malloy. 1990. Red Rock 

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Kantrud, H. A., G. L. Krapu, and G. A. Swanson. 1989. Prairie 

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Knapton, J. R. , W. E. Jones, and J. W. Sutphin. 1988. 

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Lambing, J. H. , W. E. Jones, and J. W. Sutphin. 1988. 

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Omernik, J. M. , and A. L. Gallant. 1987. Ecoregions of the West 

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