%0 E-Resource %0 U.S. Federal Government Document %0 Book %A Anima, Roberto J. %E Geological Survey (U.S.) %I U.S. Department of the Interior, U.S. Geological Survey %D 1998 %C Menlo Park, California %G English %B U.S. Geological Survey open-file report ; %T Comparison of sand distribution between April 1994 and June 1996 along six reaches of the Colorado River in Grand Canyon, Arizona %U http://purl.fdlp.gov/GPO/gpo58419