Webb, Robert H, Griffiths, Peter G, and Klearman, Tillie A, 2003, Frequency of debris flows in Grand Canyon: United States Geological Survey, v. FS - 065-0.
Added to ScienceBase on Fri Apr 19 09:48:33 MDT 2013 by processing file
<b>Landscape Change in the Southwest.xml</b> in item
<a href="https://www.sciencebase.gov/catalog/item/5042163ae4b04b508bfd3339">https://www.sciencebase.gov/catalog/item/5042163ae4b04b508bfd3339</a>