TY - RPRT TI - Hydrogeology and simulation of ground-water flow in the Silurian-Devonian aquifer system, Johnson County, Iowa AU - Patrick Tucci AU - Robert M. McKay PY - 2006 DO - 10.3133/sir20055266 UR - https://pubs.usgs.gov/publication/sir20055266 ID - sir20055266 ER -