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  1. Nesting habitats and surveying techniques for common western raptors /
    By: Call, Mayo W. - United States. Denver Service Center. - United States. b Bureau of Land Management. Denver Service Center.
    Publication info: Denver, Colo. : c 1978.
    Holding Institution: Bureau of Land Management (archive.org)
    Subjects: Eggs   Nests  Birds  Birds of prey  
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