TY - RPRT TI - Hydrogeologic characteristics of the Valley-Fill aquifer in the Arkansas River valley, Crowley and Otero Counties, Colorado AU - Gregory A. Nelson AU - R. T. Hurr AU - John E. Moore PY - 1989 DO - 10.3133/ofr89255 UR - https://pubs.usgs.gov/publication/ofr89255 ID - ofr89255 ER -