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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Pacheco, Norbert. - Ali, Sherif Fathi. - National Operations Center (U.S.). Information and Publishing Services Section. - United States. Bureau of Land Management. Amarillo Field Office.
    Publication info: Denver, Colo, U.S. Department of the Interior, Bureau of Land Management, 2008
    Holding Institution: Bureau of Land Management