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  1. Problem analysis for the Vegetation Diversity Project : a research and demonstration program to restore and maintain native plant diversity on deteriorated rangelands of the Great Basin and Columbia Plateau /
    By: Pyke, David A. - Borman, Michael M. - United States. - United States.
    Publication info: Portland, Or. : Bureau of Land Management, Oregon State Office, 1993.
    Contributed by: Bureau of Land Management (archive.org)
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