Geologic map of the Tower quadrangle, St. Louis County, Minnesota [cartographic material] / R. W. Ojakangas, P. K. Sims, P. R. Hooper

Author:: Ojakangas, Richard W.
Published:: Reston, Va. : U.S. Geological Survey, 1978.
Physical Description:: 1 map : color ; 58 x 39 cm on sheet 84 x 83 cm, folded in envelope 31 x 24 cm.
Additional Creators:: Hooper, Peter R., 1931-2012, Sims, P. K. (Paul Kibler), 1918-2011, and Geological Survey (U.S.)