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       REFINE  
              Browse All : Mining and Geology of Yolo County (Calif.) from 1887
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    Author 
        Becker, George F. 
      Full Title 
        Geological Map of the Knoxville District. U.S. Geological Survey. Monograph XIII, Atlas Sheet V. Topography by J.D. Hoffman 1883. Geo. F. Becker, Geologist in charge. Topographical Map of the Region of Clear Lake. Compiled by C.F. Hoffmann. Geo. F. Becker, Geologist in charge. 
      Publisher 
        United States Geological Survey 
      
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