Preliminary surficial geologic map of the Mesabi-Vermilion Iron Range area, northern Minnesota /

by Cotter, R. D. (Ralph D.), 1929-
Published 1964

Ground and surface water in the Mesabi and Vermilion Iron Range area northeastern Minnesota /

by Cotter, R. D. (Ralph D.), 1929-
Published 1965

Water resources in the vicinity of municipalities on the western Mesabi iron range northeastern Minnesota /

by Cotter, R. D. (Ralph D.), 1929-
Published 1965

Water resources in the vicinity of municipalities on the west-central Mesabi iron range northeastern Minnesota /

by Cotter, R. D. (Ralph D.), 1929-
Published 1965

Water resources in the vicinity of municipalities on the central Mesabi iron range, northeastern Minnesota /

by Cotter, R. D. (Ralph D.), 1929-
Published 1965

Water resources in the vicinity of municipalities on the east-central Mesabi Iron Range northeastern Minnesota /

by Cotter, R. D. (Ralph D.), 1929-
Published 1965

Water resources in the vicinity of municipalities on the eastern Mesabi Iron Range and the Vermilion Iron Range northeastern Minnesota /

by Cotter, R. D. (Ralph D.), 1929-
Published 1965

Exploratory drilling for ground water in the Mountain Iron-Virginia area, St. Louis county, Minnesota /

by Cotter, R. D. (Ralph D.), 1929-, Rogers, James E., 1929-
Published 1961

Petrography and stratigraphy of glacial drift, Mesabi-Vermilion iron range area, northeastern Minnesota /

by Winter, Thomas C., Cotter, R. D. (Ralph D.), 1929-, Young, H. L.
Published 1973

Public-supply pumpage in Wisconsin, by aquifer /

by Lawrence, C. L.
Published 1984