Geologic and structure maps of the Wallace 1 0 x 2 0 quadrangle, Montana and Idaho [cartographic material] / Department of the Interior, U.S. Geological Survey ; by Jack E. Harrison, Allan B. Griggs, and John D. Wells ; prepared in cooperation with the Montana Bureau of Mines and Geology
Includes text, bibliographies, table, cross sections, stratigraphic diagram, and indexes to sources of geologic data, location, and regional structures. Relief shown by contours and spot heights.
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