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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Clemmer, Pam. - National Science and Technology Center (U.S.)
    Edition: Revision to September 1994 version
    Publication info: Denver, Colo, U.S. Department of the Interior, Bureau of Land Management, National Science and Technology Center, 2001
    Holding Institution: Bureau of Land Management
  2. By: Prichard, Don (Donald E.) - Clemmer, Pam. - Gorges, Mark W. - Meyer, Gretchen L. - Shumac, Karen. - United States. Bureau of Land Management. PFC Aerial Photo Interpretation Team. - National Applied Resource Sciences Center (U.S.)
    Publication info: Denver, Colo, U.S. Department of the Interior, Bureau of Land Management, National Applied Resource Sciences Center, 1996
    Holding Institution: Bureau of Land Management