Ojakangas, R. W. and Matsch, C. L. <br/><br/>
Minnesota's geology 

 - Minnesota  The University  1984 
 - x,255p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hu7373
<br/><br/><label>Dewey Class. No.: </label>Hu7373  / L4