1. Status of water levels and selected water-quality conditions in the Sparta-Memphis aquifer in Arkansas and the status of water levels in the Sparta aquifer in Louisiana, Spring 2005 Author/Creator: Schrader, Tony P. Publication/Creation: Reston, Va. : U.S. Geological Survey, 2007 Resource Type: Book Access & Availability: Loading
2. Status of water levels and selected water-quality conditions in the Sparta-Memphis aquifer in Arkansas, spring-summer 2003 Author/Creator: Schrader, Tony P. Publication/Creation: Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by U.S. Geological Survey, Information Services, 2006 Resource Type: Book Access & Availability: Loading
3. Status of water levels in aquifers in the Nacatoch Sand of southwestern and northeastern Arkansas and the Tokio Formation of southwestern Arkansas, February 2005 Author/Creator: Schrader, Tony P., author Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2007 Resource Type: Book Access & Availability: Loading