ocr: 2083 USGS science fora a changing world COMPACT ATASTORAGE DSC River INDEFINI Platte C a Geologic Studies of the Platte River, Areas South-Central Maps, Nebraska and and Adjacent Geologic History Geologic Subsurface Study, Qd By Steven M.Condon Professional Paper 1706 2005 U.S. Department of the Interior U.S. Geological Survey Od