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  1. Ecology of a population of desert tortoises, Gopherus agassizi, in Ward Valley, California /
    By: Karl, Alice. - United States. Bureau of Land Management. - United States. Dept. of the Interior. Bureau of Land Management.
    Publication info: [S.l. : s.n.], 1980.
    Holding Institution: Bureau of Land Management (archive.org)
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