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      Geoscience Wisconsin Volume 13
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  Precambrian Metamorphism in the Southern Lake Superior Region and Its Bearing on Crustal Evolution1989 Journal Article: p. 1-33 
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  U.S. Department of Energy Publications on Uranium and Radiometric Surveys of Wisconsin1989 Journal Article: p. 62-66 
 
 
      
       
      
       
      
      