1. Potentiometric surface of the Ozark aquifer in northern Arkansas, 2001 Author/Creator: Schrader, Tony P., author Publication/Creation: Little Rock, Arkansas : U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading
2. Potentiometric surface of the Ozark aquifer in northern Arkansas, 2001 Author/Creator: Schrader, Tony P. Publication/Creation: Little Rock, Ark. : U.S. Dept. of the Interior, U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading
3. Potentiometric surfaces of aquifers in the Cockfield Formation in southeastern Arkansas and the Wilcox Group in southern and northeastern Arkansas, 2000 Author/Creator: Schrader, Tony P., author Publication/Creation: Little Rock, Arkansas : U.S. Department of the Interior, U.S. Geological Survey, 2000 Resource Type: Book Access & Availability: Loading