1953. Geological Survey (U.S.). Culture and drainage in part compiled from aerial photographs taken 1948. Topography by plane-table surveys, 1930 and 1951-1952. Includes quadrangl... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
Search Results
1953. Geological Survey (U.S.). Culture and drainage in part compiled from aerial photographs taken 1950. Topography by plane-table surveys 1945 and 1951-1952.;Includes quadrangle... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1953. Geological Survey (U.S.). Contour interval 10 feet.;"Topography from aerial photographs by Kelsh plotter and by plane-table surveys 1952. Aerial photographs taken 1951";Reli... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).