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Water-level changes in the High Plains aquifer--predevelopment to 1992
Water level changes in the High Plains aquifer--predevelopment to 1992
vi, 56 pages : illustrations, color maps ; 28 cm.
by Jack T. Dugan, Timothy McGrath and Ronald B. Zelt.
Includes bibliographical references (pages 54-56).
Water-resources investigations report ; 94-4027