Search Results - Valdez, Richard A.

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  1. 1
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    Life history and ecology of the humpback chub (Gila cypha) in the Colorado River, Grand Canyon, Arizona : final report / by Valdez, Richard A.

    Published 1995
    Government Document Book

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  2. 2
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    Observations of environmental change in Grand Canyon, Arizona / by Webb, Robert H.

    Published 2002
    Other Authors: “…Valdez, Richard A.…”
    Online Access
    Online Access
    Government Document eBook

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