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Primary view of Mason Sheet
Geological Survey (U.S.)
1932
Primary view of Weatherford Sheet
Geological Survey (U.S.)
1932
Primary view of Brackettville Sheet
Geological Survey (U.S.)
1932
Primary view of Baird Sheet
Geological Survey (U.S.)
1932
Primary view of Shafter Sheet
Geological Survey (U.S.)
1932
Primary view of Fredericksburg Sheet
Geological Survey (U.S.)
1932
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