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12. Louisiana ground-water map no. 6 : potentiometric surface, 1990, and water-level changes, 1974-90, of the Mississippi River alluvial aquifer in northeastern Louisiana
13. Quality of freshwater in aquifers of Louisiana, 1988
14. Louisiana ground-water map no. 5 : potentiometric surface, 1990, and water-level changes, 1974-90, of the Evangeline Equivalent/southeast Louisiana Aquifer System
15. Louisiana ground-water map no. 4 : potentiometric surface, 1989, and water-level changes, 1984-89, of the Jasper aquifer system in west-central Louisiana
16. Louisiana ground-water map no. 3 : potentiometric surface, 1989, and water-level changes, 1980-89, of the Sparta aquifer in north-central Louisiana
17. Louisiana ground-water map no. 2 : potentiometric surface, 1987, of the Gonzales-New Orleans aquifer in Southeastern Louisiana
18. Altitude of the base of freshwater in Louisiana
19. Louisiana ground-water map no. 1 : potentiometric surface, 1985, and water-level changes, 1983-85, of the Chicot aquifer in southwestern Louisiana
20. Areal extent of freshwater in major aquifers of Louisiana
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