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Reports and maps of the Geological Survey released only in the open files, 1949-1950

Jesperson, Anna.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, 1952. 1952

Reports and maps of the Geological Survey released only in the open files, 1951

Wiesnet, Donald R.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, 1953. 1953

Reports and maps of the Geological Survey released only in the open files, 1952

Wiesnet, Donald R.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, 1953. 1953

Reports and maps of the Geological Survey released only in the open files, 1953

La Sala, A. M. (Albert M.), 1931-
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, 1954. 1954

Reports and maps of the Geological Survey released only in the open files, 1954

LaSala, Albert.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, 1955. 1955

Reports and maps of the Geological Survey released only in the open files, 1955

Wilmoth, Benton M., 1925-
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, 1956. 1956

Reports and maps of the Geological Survey released only in the open files, 1956

Weld, Betsy A.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, 1957. 1957

Reports and maps of the Geological Survey released only in the open files, 1957

Weld, Betsy A.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, 1958. 1958

Reports and maps of the Geological Survey released only in the open files, 1958

Weld, Betsy A.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, 1959. 1959

Reports and maps of the Geological Survey released only in the open files, 1959

Weld, Betsy A.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, 1960. 1960

Reports and maps of the Geological Survey released only in the open files, 1960

Weld, Betsy A.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, 1961. 1961

Reports and maps of the Geological Survey released only in the open files, 1961

Weld, Betsy A.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, [1962?]. 1962

Reports and maps of the Geological Survey released only in the open files, 1962

Weld, Betsy A.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, [1963?] 1963

Reports and maps of the Geological Survey released only in the open files, 1963

Weld, Betsy A.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, [1964?] 1964

Reports and maps of the Geological Survey released only in the open files, 1964

Weld, Betsy A.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, [1965?] 1965

Reports and maps of the Geological Survey released only in the open files, 1965

Weld, Betsy A.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, [1966?] 1966