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Primary view of Circle Bluff Quadrangle
Geological Survey (U.S.)
1964
Primary view of Hillcrest Ranch Quadrangle
Geological Survey (U.S.)
1964
Primary view of Sabinal Canyon Quadrangle
Geological Survey (U.S.)
1964
Primary view of Well Hollow Quadrangle
Geological Survey (U.S.)
1964
Primary view of Del Rio
Geological Survey (U.S.)
1964
Primary view of San Antonio
Geological Survey (U.S.)
1964
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