1949. Geological Survey (U.S.). Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken 1939. Topography by plane-table methods 1946.";Relie... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
Search Results
1940, 1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, and 2000. California Geological Survey, California. Department of Conservation, Marshall, Gerald, and Mendes, Eric. This line shapefile contains symbology used to graphically depict active/dormant landslide features such as earthflow, headwalls, bases of scarps, ... California Geological Survey.
1912, 1913, 1914, 1915, 1916, 1917, 1918, 1919, 1920, 1921, 1922, 1923, 1924, 1925, 1926, 1927, 1928, 1929, 1930, 1931, 1932, 1933, 1934, 1935, 1936, 1937, 1938, 1939, 1940, 1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948, and 1949. Virtual Shanghai Project. This shape file contains a set of 1,790 major buildings located in Shanghai in the Republican era. The shape file developed over time, with additio... Virtual Shanghai Project.
1940, 1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, and 2000. California Geological Survey, California. Department of Conservation, Marshall, Gerald, and Mendes, Eric. This line shapefile depicts narrow landslide features within the Elk River watershed in Humboldt County, California. These landslides often occur a... California Geological Survey.
1949. Geological Survey (U.S.). Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken 1939. Topography by plane-table methods 1946.";Relie... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1949. Geological Survey (U.S.). Contour interval 10 feet;"Culture and drainage in part compiled from aerial photographs taken 1938-1941. Topography by plane-table methods, 1947.";... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1949. Geological Survey (U.S.). Contour interval 20 feet.;"Culture and drainage in part compiled from aerial photographs taken 1938. Topography by plane-table methods, 1946-1947";... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1949. Geological Survey (U.S.). Contour interval 10 feet;"Culture and drainage in part compiled from aerial photographs taken 1938. Topography by plane-table methods 1947.";Relief... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1949. Map of a U.S. Department of the Interior Geological Survey of the Pemberton Quadrangle in Burlington County, N.J. Stamped in red as a Drury Univers...
1949. Geological Survey (U.S.). Contour interval 10 feet.;"Topography by plane-table methods, 1946";Relief shown by contours and spot heights.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).