TY - RPRT TI - Simulation of spring discharge from a limestone aquifer in Iowa, USA AU - Y.-K. Zhang AU - E.-W. Bai AU - R. Libra AU - R. Rowden AU - H. Liu PY - 2012 DO - 10.1007/s100400050087 UR - https://pubs.usgs.gov/publication/70017723 ID - 70017723 ER -