1. Large springs in the Valley and Ridge Province in Tennessee Author/Creator: Hollyday, E. F., author Publication/Creation: Nashville, Tennessee : U.S. Geological Survey, 1990 Format: Book Access & Availability: Loading
2. Long-term effects of surface coal mining on ground-water levels and quality in two small watersheds in eastern Ohio Author/Creator: Cunningham, William L., author Publication/Creation: Columbus, Ohio : U.S. Geological Survey, 1990 Format: Book Access & Availability: Loading
3. Louisiana ground-water map no. 3 : potentiometric surface, 1989, and water-level changes, 1980-89, of the Sparta aquifer in north-central Louisiana Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Baton Rouge, Louisiana : U.S. Department of the Interior, U.S. Geological Survey, 1991 Format: Map Access & Availability: Loading