TY - RPRT TI - Hydrologic data for the Weldon Spring chemical plant site and vicinity property, St. Charles County, Missouri, 1986-90 AU - M. J. Kleeschulte AU - P. W. Cross PY - 1990 DO - 10.3133/ofr90552 UR - https://pubs.usgs.gov/publication/ofr90552 ID - ofr90552 ER -