Ojakangas, Richard W. <br/><br/>
Minnesota's geology  [electronic resource] / 
Richard W. Ojakangas, Charles L. Matsch ; drawings, charts, and graphs by Dan Beedy. 
 - Minneapolis :  University of Minnesota Press,  c1982. 
 - ix, 255 p. :  ill. (some col.). 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><br/>Electronic reproduction. Ann Arbor, MI : ProQuest, 2015. Available via World Wide Web. Access may be limited to ProQuest affiliated libraries. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Minnesota.<br/>Geology.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Electronic books.
<br/><br/><label>LC Class. No.: </label>QE127  / .O38 1982