Geologic studies of the Platte River, south-central Nebraska and adjacent areas, geologic maps, subsurface study, and geologic history [electronic resource] / by Steven M. Condon ; U.S. Department of the Interior, U.S. Geological Survey.
Imprint
[Reston, Va.?] : U.S. Geological Survey ; Denver, CO : Information Services [distributor], 2005.