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Primary view of Pottsboro Quadrangle
Geological Survey (U.S.)
1982
Primary view of Gordonville Quadrangle
Geological Survey (U.S.)
1982
Primary view of Dexter Quadrangle
Geological Survey (U.S.)
1982
Primary view of Gordonville Quadrangle
Geological Survey (U.S.)
2010
Primary view of Dexter Quadrangle
Geological Survey (U.S.)
2010
Primary view of Pottsboro Quadrangle
Geological Survey (U.S.)
2010
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