TY - RPRT TI - Geologic Setting and Hydrogeologic Units of the Columbia Plateau Regional Aquifer System, Washington, Oregon, and Idaho AU - Sue C. Kahle AU - Theresa D. Olsen AU - David S. Morgan PY - 2009 DO - 10.3133/sim3088 UR - https://pubs.usgs.gov/publication/sim3088 ID - sim3088 ER -