51. Preliminary map showing the difference between the potentiometric surfaces of the Aquia aquifer of September 1982 and September 1984 in southern Maryland Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Towson, Maryland : United States Department of the Interior, Geological Survey, 1985 Resource Type: Map Access & Availability: Loading
52. Preliminary map showing the potentiometric surface of the Aquia aquifer in southern Maryland, September 1984 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Towson, Maryland : U.S. Department of the Interior, U.S. Geological Survey, 1985 Resource Type: Map Access & Availability: Loading
53. Properties and chemical constituents in ground water from permeable Zone B (lower Pleistocene-upper Pliocene deposits) coastal lowlands aquifer system, south-central United States Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Austin, Texas : U.S. Department of the Interior, U.S. Geological Survey, 1993 Resource Type: Map Access & Availability: Loading
54. Properties and chemical constituents in ground water from permeable Zone C (lower Pliocene-upper Miocene deposits) coastal lowlands aquifer system, south-central United States Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Austin, Texas : U.S. Department of the Interior, U.S. Geological Survey, 1993 Resource Type: Map Access & Availability: Loading
55. Properties and chemical constituents in ground water from permeable Zone D (middle Miocene deposits), Coastal Lowlands Aquifer System, south-central United States Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Austin, Texas : U.S. Department of the Interior, U.S. Geological Survey, 1993 Resource Type: Map Access & Availability: Loading
56. Properties and chemical constituents in ground water from the lower Claiborne-upper Wilcox Aquifer, Gulf Coast regional aquifer systems, south-central United States Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Austin, Texas : U.S. Department of the Interior, U.S. Geological Survey, 1993 Resource Type: Map Access & Availability: Loading
57. Properties and chemical constituents in ground water from the lower Wilcox Aquifer, Mississippi Embayment Aquifer System, south-central United States Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Austin, Texas : U.S. Department of the Interior, U.S. Geological Survey, 1993 Resource Type: Map Access & Availability: Loading
58. Properties and chemical constituents in ground water from the middle Claiborne Aquifer, Gulf Coast regional aquifer systems, south-central United States Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Austin, Texas : U.S. Department of the Interior, U.S. Geological Survey, 1993 Resource Type: Map Access & Availability: Loading
59. Properties and chemical constituents in ground water from the middle Wilcox Aquifer, Gulf Coast Regional Aquifer Systems, south-central United States Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Austin, Texas : U.S. Department of the Interior, U.S. Geological Survey, 1993 Resource Type: Map Access & Availability: Loading
60. Properties and chemical constituents in ground water from the Mississippi River Valley alluvial aquifer and permeable zone A (Holocene-upper Pleistocene deposits), south-central United States Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Austin, Texas : U.S. Department of the Interior, U.S. Geological Survey, 1992 Resource Type: Map Access & Availability: Loading