1. Hydrologic analysis of the High Plains aquifer system in Box Butte County, Nebraska Author/Creator: Pettijohn, Robert A., author Publication/Creation: [Reston, Virginia?] : U.S. Geological Survey, 1984 Resource Type: Book Access & Availability: Loading
2. Geohydrology of the High Plains aquifer system in Nebraska Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Lincoln, Neb.] : Department of the Interior, United States Geological Survey, 1983 Resource Type: Map Access & Availability: Loading