1. Ground-water quality beneath irrigated agriculture in the central High Plains aquifer, 1999-2000 Publication/Creation: Denver, CO : U.S. Geological Survey, Information Services [distributor]. Resource Type: Book Access & Availability: Loading
2. Ground-water quality in the central High Plains Aquifer, Colorado, Kansas, New Mexico, Oklahoma, and Texas, 1999 Publication/Creation: Oklahoma City, Ok : U.S. Dept. of the Interior, U.S. Geological Survey : U.S. G.P.O., 2002 Resource Type: Book Access & Availability: Loading
3. Ground-water quality in the central High Plains Aquifer, Colorado, Kansas, New Mexico, Oklahoma, and Texas, 1999 Publication/Creation: Oklahoma City, OK : U.S. Dept. of the Interior, U.S. Geological Survey, 2002 Resource Type: Book Access & Availability: Loading