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Primary view of Heuco Mountains Quadrangle
Geological Survey (U.S.)
1958
Primary view of South Bird Island Quadrangle
Geological Survey (U.S.)
1957
Primary view of Tarpley Quadrangle
United States. Army. Corps of Engineers.
1956
Primary view of Round Rock Quadrangle
Geological Survey (U.S.)
1951
Primary view of Austin Quadrangle
Geological Survey (U.S.)
1956
Primary view of Lexington Quadrangle
United States. Army. Corps of Engineers.
1950
Primary view of Devils River Quadrangle
Geological Survey (U.S.)
1958
Primary view of Purmela Quadrangle
United States. Army. Corps of Engineers.
1953
Primary view of Schulenburg Quadrangle
United States. Army. Corps of Engineers.
1956
Primary view of Piedra Creek Quadrangle
United States. Army. Corps of Engineers.
1956
Primary view of Karnes City Quadrangle
United States. Army. Corps of Engineers.
1956
Primary view of Randado Quadrangle
United States. Army. Corps of Engineers.
1959
Primary view of Killeen Quadrangle
United States. Army. Corps of Engineers.
1953
Primary view of Hemphill Quadrangle
Geological Survey (U.S.)
1959
Primary view of Floresville Quadrangle
United States. Army. Corps of Engineers.
1958
Primary view of Los Fresnos Quadrangle
Geological Survey (U.S.)
1959
Primary view of Hood Spring Quadrangle
United States. Army. Corps of Engineers.
1958
Primary view of Bassett Lake Quadrangle
Geological Survey (U.S.)
1954
Primary view of Nacogdoches Quadrangle
Geological Survey (U.S.)
1953
Primary view of Brookshire Quadrangle
Geological Survey (U.S.)
1957
Primary view of Divot Quadrangle
United States. Army. Corps of Engineers.
1956
Primary view of South of Potrero Lopeno Quadrangle
Geological Survey (U.S.)
1957
Primary view of Hawley Quadrangle
Geological Survey (U.S.)
1958
Primary view of Cushing Quadrangle
Geological Survey (U.S.)
1955
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