TY - RPRT TI - Hydrogeologic characteristics of the Valley-Fill aquifer in the Arkansas River valley, Pueblo County, Colorado AU - Gregory A. Nelson AU - R. T. Hurr AU - John E. Moore PY - 1989 DO - 10.3133/ofr89256 UR - https://pubs.usgs.gov/publication/ofr89256 ID - ofr89256 ER -