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Primary view of Derby Quadrangle
Geological Survey (U.S.)
1966
Primary view of Wilson Ranch Quadrangle
Geological Survey (U.S.)
1966
Primary view of Pearsall South Quadrangle
Geological Survey (U.S.)
1966
Primary view of Pearsall North Quadrangle
Geological Survey (U.S.)
1966
Primary view of Ghost Hill Quadrangle
Geological Survey (U.S.)
1966
Primary view of Moore Quadrangle
Geological Survey (U.S.)
1966
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