"Karte." . . "U.S." . . . . . "Smith Mills quadrangle, Henderson and Union counties, Kentucky"@en . . . . . . . . . . . "Maps"@en . "Map showing bedrock topography and area of occurrence of Madisonville limestone member of Sturgis formation (Upper Pennsylvanian) beneath alluvial deposits of the Smith Mills quadrangle, Henderson and Union counties, Kentucky"@en . . . . . "Map showing bedrock topography and area of occurrence of Madisonville limestone member of sturgis formation y upper pennsylvanian> beneath alluvial deposits of the Smith Mills quadrangle, Henderson and Union counties, Kentucky" . . . . "Madison Limestone." . .