National Geologic Map Database
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                Title: Twenty-first annual report of the Director of the United States Geological Survey, 1899-1900: Part I - director's report, including triangulation, primary traverse, and spirit leveling
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                Author(s): Walcott, C.D.
            
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                    Publishing Organization: U.S. Geological Survey
            
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                Series and Number: Annual Report AR-21 [part 1]
            
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                Larger Work: Twenty-first annual report of the Director of the United States Geological Survey, 1899-1900
                
                
            
- Publication Date: 1900
- Cross Section: None
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