1. Potentiometric-surface map of the Meridian-Upper Wilcox Aquifer in Mississippi, October through December 1988 Yale Public content 1994. 2009-02-23T14:13:56Z. 2011-03-04T00:04:24Z. Oakley, W. T. The Survey ; Copies can be purchased from Earth Science Information Center, Open-File Reports Section. English. Public. Mississippi.