TY - RPRT TI - Geohydrology, water quality, and simulation of ground-water flow at the Weldon Spring chemical plant and vicinity, St. Charles County, Missouri, 1987-90 AU - M. J. Kleeschulte AU - J. L. Imes PY - 1994 DO - 10.3133/ofr93648 UR - https://pubs.usgs.gov/publication/ofr93648 ID - ofr93648 ER -