1. Configuration of the top of the Selma group in Alabama / [cartographic material] Yale Public content 1984. 2011-03-28T17:41:01Z. 2012-02-14T23:25:17Z. Geological Survey of Alabama. English. Public. Alabama.
2. Configuration of the top of the Tuscaloosa group in Alabama / [cartographic material] Yale Public content 1984. 2011-03-28T17:45:06Z. 2021-05-04T23:24:30Z. Geological Survey of Alabama. English. Public. Alabama.